Send parameters to java class from servlet
up vote
1
down vote
favorite
I have a Jsp page and servlet which basically accepts the value for number of cities and next for matrix. My servlet takes the input value as string convert it into integer and store it in a two dimensional array
Index.jsp
<body>
<form action="sample" method="post">
<h1>Travelling Salesman Problem</h1>
<input placeholder="Number of Cities" type="text" name="cities" required="">
<input placeholder="Matrix" type="text" name="matrix" required="">
<button>Submit</button>
</form>
</body>
Servlet
public class sample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
int city = Integer.parseInt(request.getParameter("cities"));
String numbers = request.getParameter("matrix");
String splitText = numbers.split(" ");
int mat = new int[splitText.length];
for (int i = 0; i < splitText.length; i++) {
mat[i] = Integer.parseInt(splitText[i]);
}
int array2d = new int[city][city];
int count = 0;
for (int i = 0; i < city; i++) {
for (int j = 0; j < city; j++) {
if (count == mat.length)
break;
array2d[i][j] = mat[i * city + j];
count++;
}
}
}
}
Now i want to pass these parameters city and array2d to the following java class
public class TSPNearestNeighbour
{
private int numberOfNodes;
private Stack<Integer> stack;
public TSPNearestNeighbour()
{
stack = new Stack<Integer>();
}
public void tsp(int adjacencyMatrix)
{
numberOfNodes = adjacencyMatrix[1].length - 1;
int visited = new
int[numberOfNodes + 1];
visited[1] = 1;
stack.push(1);
int element, dst = 0, i;
int min = Integer.MAX_VALUE;
boolean minFlag = false;
System.out.print(1 + "t");
while (!stack.isEmpty())
{
element = stack.peek();
i = 1;
min = Integer.MAX_VALUE;
while (i <= numberOfNodes)
{
if
(adjacencyMatrix[element][i] > 1 && visited[i] == 0)
{
if (min > adjacencyMatrix[element][i])
{
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag)
{
visited[dst] = 1;
stack.push(dst);
System.out.print(dst +"t");
minFlag = false;
continue;
}
stack.pop();
}
}
public static void main (String... arg)
{
int number_of_nodes;
Scanner scanner = null;
try
{
number_of_nodes = city //here i want to pass the city parameter
int adjacency_matrix = new int[number_of_nodes + 1][number_of_nodes +1];
for (int i = 1; i <=number_of_nodes; i++)
{
for (int j = 1; j <=number_of_nodes; j++)
{
adjacency_matrix[i][j]= array2d[i][j] // and here the array 2d parameter
}
}
for (int i = 1; i <=number_of_nodes; i++)
{
for (int j = 1; j <=number_of_nodes; j++)
{
if
(adjacency_matrix[i][j] == 1 && adjacency_matrix[j][i] == 0)
{
adjacency_matrix[j][i] = 1;
}
}
}
System.out.println("the citys are visited as follows");
TSPNearestNeighbour tspNearestNeighbour = new TSPNearestNeighbour();
tspNearestNeighbour.tsp(adjacency_matrix);
} catch (InputMismatchException inputMismatch)
{
System.out.println("Wrong Input format");
}
scanner.close();
}
}
So how can we pass on these parameters from a servlet?
And where to include this class? In the servlet itself or create a separate class, as I'm using intellij. So please guide me through this.
java jsp web servlets java-ee
asked Nov 21 at 15:26
Abhishek
198
add a comment |
up vote
1
down vote
favorite
I have a Jsp page and servlet which basically accepts the value for number of cities and next for matrix. My servlet takes the input value as string convert it into integer and store it in a two dimensional array
Index.jsp
<body>
<form action="sample" method="post">
<h1>Travelling Salesman Problem</h1>
<input placeholder="Number of Cities" type="text" name="cities" required="">
<input placeholder="Matrix" type="text" name="matrix" required="">
<button>Submit</button>
</form>
</body>
Servlet
public class sample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
int city = Integer.parseInt(request.getParameter("cities"));
String numbers = request.getParameter("matrix");
String splitText = numbers.split(" ");
int mat = new int[splitText.length];
for (int i = 0; i < splitText.length; i++) {
mat[i] = Integer.parseInt(splitText[i]);
}
int array2d = new int[city][city];
int count = 0;
for (int i = 0; i < city; i++) {
for (int j = 0; j < city; j++) {
if (count == mat.length)
break;
array2d[i][j] = mat[i * city + j];
count++;
}
}
}
}
Now i want to pass these parameters city and array2d to the following java class
public class TSPNearestNeighbour
{
private int numberOfNodes;
private Stack<Integer> stack;
public TSPNearestNeighbour()
{
stack = new Stack<Integer>();
}
public void tsp(int adjacencyMatrix)
{
numberOfNodes = adjacencyMatrix[1].length - 1;
int visited = new
int[numberOfNodes + 1];
visited[1] = 1;
stack.push(1);
int element, dst = 0, i;
int min = Integer.MAX_VALUE;
boolean minFlag = false;
System.out.print(1 + "t");
while (!stack.isEmpty())
{
element = stack.peek();
i = 1;
min = Integer.MAX_VALUE;
while (i <= numberOfNodes)
{
if
(adjacencyMatrix[element][i] > 1 && visited[i] == 0)
{
if (min > adjacencyMatrix[element][i])
{
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag)
{
visited[dst] = 1;
stack.push(dst);
System.out.print(dst +"t");
minFlag = false;
continue;
}
stack.pop();
}
}
public static void main (String... arg)
{
int number_of_nodes;
Scanner scanner = null;
try
{
number_of_nodes = city //here i want to pass the city parameter
int adjacency_matrix = new int[number_of_nodes + 1][number_of_nodes +1];
for (int i = 1; i <=number_of_nodes; i++)
{
for (int j = 1; j <=number_of_nodes; j++)
{
adjacency_matrix[i][j]= array2d[i][j] // and here the array 2d parameter
}
}
for (int i = 1; i <=number_of_nodes; i++)
{
for (int j = 1; j <=number_of_nodes; j++)
{
if
(adjacency_matrix[i][j] == 1 && adjacency_matrix[j][i] == 0)
{
adjacency_matrix[j][i] = 1;
}
}
}
System.out.println("the citys are visited as follows");
TSPNearestNeighbour tspNearestNeighbour = new TSPNearestNeighbour();
tspNearestNeighbour.tsp(adjacency_matrix);
} catch (InputMismatchException inputMismatch)
{
System.out.println("Wrong Input format");
}
scanner.close();
}
}
So how can we pass on these parameters from a servlet?
And where to include this class? In the servlet itself or create a separate class, as I'm using intellij. So please guide me through this.
java jsp web servlets java-ee
asked Nov 21 at 15:26
Abhishek
198
Where is that "program" running?
– JGlass
Nov 21 at 15:47
Where do you want to pass them?
– Jonathan Laliberte
Nov 21 at 15:52
Actually this is where even I'm confused.. If I separately run the program by creating separate .java file in intellij and run. It's working fine by accepting command line inputs. So I wanted a web interface for that and my progress is this. So how to pass these inputted parameters exactly to program? So, please guide me on this.
– Abhishek
Nov 21 at 16:04
@Jonathan I have highlighted the place where I want to pass the argument,please check
– Abhishek
Nov 21 at 16:06
add a comment |
up vote
1
down vote
favorite
up vote
1
down vote
favorite
I have a Jsp page and servlet which basically accepts the value for number of cities and next for matrix. My servlet takes the input value as string convert it into integer and store it in a two dimensional array
Index.jsp
<body>
<form action="sample" method="post">
<h1>Travelling Salesman Problem</h1>
<input placeholder="Number of Cities" type="text" name="cities" required="">
<input placeholder="Matrix" type="text" name="matrix" required="">
<button>Submit</button>
</form>
</body>
Servlet
public class sample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
int city = Integer.parseInt(request.getParameter("cities"));
String numbers = request.getParameter("matrix");
String splitText = numbers.split(" ");
int mat = new int[splitText.length];
for (int i = 0; i < splitText.length; i++) {
mat[i] = Integer.parseInt(splitText[i]);
}
int array2d = new int[city][city];
int count = 0;
for (int i = 0; i < city; i++) {
for (int j = 0; j < city; j++) {
if (count == mat.length)
break;
array2d[i][j] = mat[i * city + j];
count++;
}
}
}
}
Now i want to pass these parameters city and array2d to the following java class
public class TSPNearestNeighbour
{
private int numberOfNodes;
private Stack<Integer> stack;
public TSPNearestNeighbour()
{
stack = new Stack<Integer>();
}
public void tsp(int adjacencyMatrix)
{
numberOfNodes = adjacencyMatrix[1].length - 1;
int visited = new
int[numberOfNodes + 1];
visited[1] = 1;
stack.push(1);
int element, dst = 0, i;
int min = Integer.MAX_VALUE;
boolean minFlag = false;
System.out.print(1 + "t");
while (!stack.isEmpty())
{
element = stack.peek();
i = 1;
min = Integer.MAX_VALUE;
while (i <= numberOfNodes)
{
if
(adjacencyMatrix[element][i] > 1 && visited[i] == 0)
{
if (min > adjacencyMatrix[element][i])
{
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag)
{
visited[dst] = 1;
stack.push(dst);
System.out.print(dst +"t");
minFlag = false;
continue;
}
stack.pop();
}
}
public static void main (String... arg)
{
int number_of_nodes;
Scanner scanner = null;
try
{
number_of_nodes = city //here i want to pass the city parameter
int adjacency_matrix = new int[number_of_nodes + 1][number_of_nodes +1];
for (int i = 1; i <=number_of_nodes; i++)
{
for (int j = 1; j <=number_of_nodes; j++)
{
adjacency_matrix[i][j]= array2d[i][j] // and here the array 2d parameter
}
}
for (int i = 1; i <=number_of_nodes; i++)
{
for (int j = 1; j <=number_of_nodes; j++)
{
if
(adjacency_matrix[i][j] == 1 && adjacency_matrix[j][i] == 0)
{
adjacency_matrix[j][i] = 1;
}
}
}
System.out.println("the citys are visited as follows");
TSPNearestNeighbour tspNearestNeighbour = new TSPNearestNeighbour();
tspNearestNeighbour.tsp(adjacency_matrix);
} catch (InputMismatchException inputMismatch)
{
System.out.println("Wrong Input format");
}
scanner.close();
}
}
So how can we pass on these parameters from a servlet?
And where to include this class? In the servlet itself or create a separate class, as I'm using intellij. So please guide me through this.
java jsp web servlets java-ee
asked Nov 21 at 15:26
Abhishek
198
I have a Jsp page and servlet which basically accepts the value for number of cities and next for matrix. My servlet takes the input value as string convert it into integer and store it in a two dimensional array
Index.jsp
<body>
<form action="sample" method="post">
<h1>Travelling Salesman Problem</h1>
<input placeholder="Number of Cities" type="text" name="cities" required="">
<input placeholder="Matrix" type="text" name="matrix" required="">
<button>Submit</button>
</form>
</body>
Servlet
public class sample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
int city = Integer.parseInt(request.getParameter("cities"));
String numbers = request.getParameter("matrix");
String splitText = numbers.split(" ");
int mat = new int[splitText.length];
for (int i = 0; i < splitText.length; i++) {
mat[i] = Integer.parseInt(splitText[i]);
}
int array2d = new int[city][city];
int count = 0;
for (int i = 0; i < city; i++) {
for (int j = 0; j < city; j++) {
if (count == mat.length)
break;
array2d[i][j] = mat[i * city + j];
count++;
}
}
}
}
Now i want to pass these parameters city and array2d to the following java class
public class TSPNearestNeighbour
{
private int numberOfNodes;
private Stack<Integer> stack;
public TSPNearestNeighbour()
{
stack = new Stack<Integer>();
}
public void tsp(int adjacencyMatrix)
{
numberOfNodes = adjacencyMatrix[1].length - 1;
int visited = new
int[numberOfNodes + 1];
visited[1] = 1;
stack.push(1);
int element, dst = 0, i;
int min = Integer.MAX_VALUE;
boolean minFlag = false;
System.out.print(1 + "t");
while (!stack.isEmpty())
{
element = stack.peek();
i = 1;
min = Integer.MAX_VALUE;
while (i <= numberOfNodes)
{
if
(adjacencyMatrix[element][i] > 1 && visited[i] == 0)
{
if (min > adjacencyMatrix[element][i])
{
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag)
{
visited[dst] = 1;
stack.push(dst);
System.out.print(dst +"t");
minFlag = false;
continue;
}
stack.pop();
}
}
public static void main (String... arg)
{
int number_of_nodes;
Scanner scanner = null;
try
{
number_of_nodes = city //here i want to pass the city parameter
int adjacency_matrix = new int[number_of_nodes + 1][number_of_nodes +1];
for (int i = 1; i <=number_of_nodes; i++)
{
for (int j = 1; j <=number_of_nodes; j++)
{
adjacency_matrix[i][j]= array2d[i][j] // and here the array 2d parameter
}
}
for (int i = 1; i <=number_of_nodes; i++)
{
for (int j = 1; j <=number_of_nodes; j++)
{
if
(adjacency_matrix[i][j] == 1 && adjacency_matrix[j][i] == 0)
{
adjacency_matrix[j][i] = 1;
}
}
}
System.out.println("the citys are visited as follows");
TSPNearestNeighbour tspNearestNeighbour = new TSPNearestNeighbour();
tspNearestNeighbour.tsp(adjacency_matrix);
} catch (InputMismatchException inputMismatch)
{
System.out.println("Wrong Input format");
}
scanner.close();
}
}
So how can we pass on these parameters from a servlet?
And where to include this class? In the servlet itself or create a separate class, as I'm using intellij. So please guide me through this.
java jsp web servlets java-ee
java jsp web servlets java-ee
asked Nov 21 at 15:26
Abhishek
198
asked Nov 21 at 15:26
Abhishek
198
edited Nov 21 at 16:47
asked Nov 21 at 15:26
Abhishek
198
asked Nov 21 at 15:26
Abhishek
198
asked Nov 21 at 15:26
Abhishek
198
198
Where is that "program" running?
– JGlass
Nov 21 at 15:47
Where do you want to pass them?
– Jonathan Laliberte
Nov 21 at 15:52
Actually this is where even I'm confused.. If I separately run the program by creating separate .java file in intellij and run. It's working fine by accepting command line inputs. So I wanted a web interface for that and my progress is this. So how to pass these inputted parameters exactly to program? So, please guide me on this.
– Abhishek
Nov 21 at 16:04
@Jonathan I have highlighted the place where I want to pass the argument,please check
– Abhishek
Nov 21 at 16:06
add a comment |
Where is that "program" running?
– JGlass
Nov 21 at 15:47
Where do you want to pass them?
– Jonathan Laliberte
Nov 21 at 15:52
Actually this is where even I'm confused.. If I separately run the program by creating separate .java file in intellij and run. It's working fine by accepting command line inputs. So I wanted a web interface for that and my progress is this. So how to pass these inputted parameters exactly to program? So, please guide me on this.
– Abhishek
Nov 21 at 16:04
@Jonathan I have highlighted the place where I want to pass the argument,please check
– Abhishek
Nov 21 at 16:06
Where is that "program" running?
– JGlass
Nov 21 at 15:47
Where is that "program" running?
– JGlass
Nov 21 at 15:47
Where do you want to pass them?
– Jonathan Laliberte
Nov 21 at 15:52
Where do you want to pass them?
– Jonathan Laliberte
Nov 21 at 15:52
Actually this is where even I'm confused.. If I separately run the program by creating separate .java file in intellij and run. It's working fine by accepting command line inputs. So I wanted a web interface for that and my progress is this. So how to pass these inputted parameters exactly to program? So, please guide me on this.
– Abhishek
Nov 21 at 16:04
Actually this is where even I'm confused.. If I separately run the program by creating separate .java file in intellij and run. It's working fine by accepting command line inputs. So I wanted a web interface for that and my progress is this. So how to pass these inputted parameters exactly to program? So, please guide me on this.
– Abhishek
Nov 21 at 16:04
@Jonathan I have highlighted the place where I want to pass the argument,please check
– Abhishek
Nov 21 at 16:06
@Jonathan I have highlighted the place where I want to pass the argument,please check
– Abhishek
Nov 21 at 16:06
add a comment |
1 Answer
1
active
oldest
votes
up vote
1
down vote
accepted
I'm seeing some logical errors in your code, but I'm not going into that context and I don't know what you are trying to do(On the processing side). But I'll try to cover the actual question you are asking, like "how to pass the jsp parameters to your another class".
So you can directly pass the strings as an argument to the another class like I've shown in the below code. I think I don't need to explain further you can see the code you will get it.
First your Servlet code: Sample.java
package com.server.testing;
import java.io.IOException;
public class Sample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String city = request.getParameter("cities");
String numbers = request.getParameter("matrix");
String args = new String[2];
args[0] = city;
args[1] = numbers;
TSPNearestNeighbour.main(args);
}
}
Now your another java class: TSPNearestNeighbour.java
package com.server.testing;
import java.util.InputMismatchException;
import java.util.Stack;
public class TSPNearestNeighbour {
private int numberOfNodes;
private Stack<Integer> stack;
public TSPNearestNeighbour() {
stack = new Stack<Integer>();
}
public void tsp(int adjacencyMatrix) {
numberOfNodes = adjacencyMatrix[1].length - 1;
int visited = new int[numberOfNodes + 1];
visited[1] = 1;
stack.push(1);
int element, dst = 0, i;
int min = Integer.MAX_VALUE;
boolean minFlag = false;
System.out.print(1 + "t");
while (!stack.isEmpty()) {
element = stack.peek();
i = 1;
min = Integer.MAX_VALUE;
while (i <= numberOfNodes) {
if (adjacencyMatrix[element][i] > 1 && visited[i] == 0) {
if (min > adjacencyMatrix[element][i]) {
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag) {
visited[dst] = 1;
stack.push(dst);
System.out.print(dst + "t");
minFlag = false;
continue;
}
stack.pop();
}
}
public static void main(String args) {
if(args.length<2) {
System.out.println("Two arguments required <city> <numbers>");
System.exit(-1);
}
int number_of_nodes=Integer.parseInt(args[0]);
String splitText = args[1].split(" +");
int mat = new int[splitText.length];
for (int i = 0; i < splitText.length; i++) {
mat[i] = Integer.parseInt(splitText[i]);
}
try {
int adjacency_matrix = new int[number_of_nodes + 1][number_of_nodes + 1];
int count = 0;
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (count == mat.length)
break;
adjacency_matrix[i][j]= mat[(i-1) * number_of_nodes + (j-1)];
count++;
}
}
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (adjacency_matrix[i][j] == 1 && adjacency_matrix[j][i] == 0) {
adjacency_matrix[j][i] = 1;
}
}
}
System.out.println("the citys are visited as follows");
TSPNearestNeighbour tspNearestNeighbour = new TSPNearestNeighbour();
tspNearestNeighbour.tsp(adjacency_matrix);
} catch (InputMismatchException inputMismatch) {
System.out.println("Wrong Input format");
}
}
}
answered Nov 21 at 18:23
abhishek chaurasiya
462
According to my logic the java class is working fine. I just wanted to know regarding passing values. So, i will try what you have explained and let me see.
– Abhishek
Nov 22 at 16:02
Okay let me know if it worked (and you can accept the answer if it worked)
– abhishek chaurasiya
Nov 23 at 5:07
I used your concept and it's working.
– Abhishek
2 days ago
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
1
down vote
accepted
I'm seeing some logical errors in your code, but I'm not going into that context and I don't know what you are trying to do(On the processing side). But I'll try to cover the actual question you are asking, like "how to pass the jsp parameters to your another class".
So you can directly pass the strings as an argument to the another class like I've shown in the below code. I think I don't need to explain further you can see the code you will get it.
First your Servlet code: Sample.java
package com.server.testing;
import java.io.IOException;
public class Sample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String city = request.getParameter("cities");
String numbers = request.getParameter("matrix");
String args = new String[2];
args[0] = city;
args[1] = numbers;
TSPNearestNeighbour.main(args);
}
}
Now your another java class: TSPNearestNeighbour.java
package com.server.testing;
import java.util.InputMismatchException;
import java.util.Stack;
public class TSPNearestNeighbour {
private int numberOfNodes;
private Stack<Integer> stack;
public TSPNearestNeighbour() {
stack = new Stack<Integer>();
}
public void tsp(int adjacencyMatrix) {
numberOfNodes = adjacencyMatrix[1].length - 1;
int visited = new int[numberOfNodes + 1];
visited[1] = 1;
stack.push(1);
int element, dst = 0, i;
int min = Integer.MAX_VALUE;
boolean minFlag = false;
System.out.print(1 + "t");
while (!stack.isEmpty()) {
element = stack.peek();
i = 1;
min = Integer.MAX_VALUE;
while (i <= numberOfNodes) {
if (adjacencyMatrix[element][i] > 1 && visited[i] == 0) {
if (min > adjacencyMatrix[element][i]) {
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag) {
visited[dst] = 1;
stack.push(dst);
System.out.print(dst + "t");
minFlag = false;
continue;
}
stack.pop();
}
}
public static void main(String args) {
if(args.length<2) {
System.out.println("Two arguments required <city> <numbers>");
System.exit(-1);
}
int number_of_nodes=Integer.parseInt(args[0]);
String splitText = args[1].split(" +");
int mat = new int[splitText.length];
for (int i = 0; i < splitText.length; i++) {
mat[i] = Integer.parseInt(splitText[i]);
}
try {
int adjacency_matrix = new int[number_of_nodes + 1][number_of_nodes + 1];
int count = 0;
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (count == mat.length)
break;
adjacency_matrix[i][j]= mat[(i-1) * number_of_nodes + (j-1)];
count++;
}
}
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (adjacency_matrix[i][j] == 1 && adjacency_matrix[j][i] == 0) {
adjacency_matrix[j][i] = 1;
}
}
}
System.out.println("the citys are visited as follows");
TSPNearestNeighbour tspNearestNeighbour = new TSPNearestNeighbour();
tspNearestNeighbour.tsp(adjacency_matrix);
} catch (InputMismatchException inputMismatch) {
System.out.println("Wrong Input format");
}
}
}
answered Nov 21 at 18:23
abhishek chaurasiya
462
According to my logic the java class is working fine. I just wanted to know regarding passing values. So, i will try what you have explained and let me see.
– Abhishek
Nov 22 at 16:02
Okay let me know if it worked (and you can accept the answer if it worked)
– abhishek chaurasiya
Nov 23 at 5:07
I used your concept and it's working.
– Abhishek
2 days ago
add a comment |
up vote
1
down vote
accepted
I'm seeing some logical errors in your code, but I'm not going into that context and I don't know what you are trying to do(On the processing side). But I'll try to cover the actual question you are asking, like "how to pass the jsp parameters to your another class".
So you can directly pass the strings as an argument to the another class like I've shown in the below code. I think I don't need to explain further you can see the code you will get it.
First your Servlet code: Sample.java
package com.server.testing;
import java.io.IOException;
public class Sample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String city = request.getParameter("cities");
String numbers = request.getParameter("matrix");
String args = new String[2];
args[0] = city;
args[1] = numbers;
TSPNearestNeighbour.main(args);
}
}
Now your another java class: TSPNearestNeighbour.java
package com.server.testing;
import java.util.InputMismatchException;
import java.util.Stack;
public class TSPNearestNeighbour {
private int numberOfNodes;
private Stack<Integer> stack;
public TSPNearestNeighbour() {
stack = new Stack<Integer>();
}
public void tsp(int adjacencyMatrix) {
numberOfNodes = adjacencyMatrix[1].length - 1;
int visited = new int[numberOfNodes + 1];
visited[1] = 1;
stack.push(1);
int element, dst = 0, i;
int min = Integer.MAX_VALUE;
boolean minFlag = false;
System.out.print(1 + "t");
while (!stack.isEmpty()) {
element = stack.peek();
i = 1;
min = Integer.MAX_VALUE;
while (i <= numberOfNodes) {
if (adjacencyMatrix[element][i] > 1 && visited[i] == 0) {
if (min > adjacencyMatrix[element][i]) {
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag) {
visited[dst] = 1;
stack.push(dst);
System.out.print(dst + "t");
minFlag = false;
continue;
}
stack.pop();
}
}
public static void main(String args) {
if(args.length<2) {
System.out.println("Two arguments required <city> <numbers>");
System.exit(-1);
}
int number_of_nodes=Integer.parseInt(args[0]);
String splitText = args[1].split(" +");
int mat = new int[splitText.length];
for (int i = 0; i < splitText.length; i++) {
mat[i] = Integer.parseInt(splitText[i]);
}
try {
int adjacency_matrix = new int[number_of_nodes + 1][number_of_nodes + 1];
int count = 0;
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (count == mat.length)
break;
adjacency_matrix[i][j]= mat[(i-1) * number_of_nodes + (j-1)];
count++;
}
}
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (adjacency_matrix[i][j] == 1 && adjacency_matrix[j][i] == 0) {
adjacency_matrix[j][i] = 1;
}
}
}
System.out.println("the citys are visited as follows");
TSPNearestNeighbour tspNearestNeighbour = new TSPNearestNeighbour();
tspNearestNeighbour.tsp(adjacency_matrix);
} catch (InputMismatchException inputMismatch) {
System.out.println("Wrong Input format");
}
}
}
answered Nov 21 at 18:23
abhishek chaurasiya
462
According to my logic the java class is working fine. I just wanted to know regarding passing values. So, i will try what you have explained and let me see.
– Abhishek
Nov 22 at 16:02
Okay let me know if it worked (and you can accept the answer if it worked)
– abhishek chaurasiya
Nov 23 at 5:07
I used your concept and it's working.
– Abhishek
2 days ago
add a comment |
up vote
1
down vote
accepted
up vote
1
down vote
accepted
I'm seeing some logical errors in your code, but I'm not going into that context and I don't know what you are trying to do(On the processing side). But I'll try to cover the actual question you are asking, like "how to pass the jsp parameters to your another class".
So you can directly pass the strings as an argument to the another class like I've shown in the below code. I think I don't need to explain further you can see the code you will get it.
First your Servlet code: Sample.java
package com.server.testing;
import java.io.IOException;
public class Sample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String city = request.getParameter("cities");
String numbers = request.getParameter("matrix");
String args = new String[2];
args[0] = city;
args[1] = numbers;
TSPNearestNeighbour.main(args);
}
}
Now your another java class: TSPNearestNeighbour.java
package com.server.testing;
import java.util.InputMismatchException;
import java.util.Stack;
public class TSPNearestNeighbour {
private int numberOfNodes;
private Stack<Integer> stack;
public TSPNearestNeighbour() {
stack = new Stack<Integer>();
}
public void tsp(int adjacencyMatrix) {
numberOfNodes = adjacencyMatrix[1].length - 1;
int visited = new int[numberOfNodes + 1];
visited[1] = 1;
stack.push(1);
int element, dst = 0, i;
int min = Integer.MAX_VALUE;
boolean minFlag = false;
System.out.print(1 + "t");
while (!stack.isEmpty()) {
element = stack.peek();
i = 1;
min = Integer.MAX_VALUE;
while (i <= numberOfNodes) {
if (adjacencyMatrix[element][i] > 1 && visited[i] == 0) {
if (min > adjacencyMatrix[element][i]) {
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag) {
visited[dst] = 1;
stack.push(dst);
System.out.print(dst + "t");
minFlag = false;
continue;
}
stack.pop();
}
}
public static void main(String args) {
if(args.length<2) {
System.out.println("Two arguments required <city> <numbers>");
System.exit(-1);
}
int number_of_nodes=Integer.parseInt(args[0]);
String splitText = args[1].split(" +");
int mat = new int[splitText.length];
for (int i = 0; i < splitText.length; i++) {
mat[i] = Integer.parseInt(splitText[i]);
}
try {
int adjacency_matrix = new int[number_of_nodes + 1][number_of_nodes + 1];
int count = 0;
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (count == mat.length)
break;
adjacency_matrix[i][j]= mat[(i-1) * number_of_nodes + (j-1)];
count++;
}
}
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (adjacency_matrix[i][j] == 1 && adjacency_matrix[j][i] == 0) {
adjacency_matrix[j][i] = 1;
}
}
}
System.out.println("the citys are visited as follows");
TSPNearestNeighbour tspNearestNeighbour = new TSPNearestNeighbour();
tspNearestNeighbour.tsp(adjacency_matrix);
} catch (InputMismatchException inputMismatch) {
System.out.println("Wrong Input format");
}
}
}
answered Nov 21 at 18:23
abhishek chaurasiya
462
I'm seeing some logical errors in your code, but I'm not going into that context and I don't know what you are trying to do(On the processing side). But I'll try to cover the actual question you are asking, like "how to pass the jsp parameters to your another class".
So you can directly pass the strings as an argument to the another class like I've shown in the below code. I think I don't need to explain further you can see the code you will get it.
First your Servlet code: Sample.java
package com.server.testing;
import java.io.IOException;
public class Sample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String city = request.getParameter("cities");
String numbers = request.getParameter("matrix");
String args = new String[2];
args[0] = city;
args[1] = numbers;
TSPNearestNeighbour.main(args);
}
}
Now your another java class: TSPNearestNeighbour.java
package com.server.testing;
import java.util.InputMismatchException;
import java.util.Stack;
public class TSPNearestNeighbour {
private int numberOfNodes;
private Stack<Integer> stack;
public TSPNearestNeighbour() {
stack = new Stack<Integer>();
}
public void tsp(int adjacencyMatrix) {
numberOfNodes = adjacencyMatrix[1].length - 1;
int visited = new int[numberOfNodes + 1];
visited[1] = 1;
stack.push(1);
int element, dst = 0, i;
int min = Integer.MAX_VALUE;
boolean minFlag = false;
System.out.print(1 + "t");
while (!stack.isEmpty()) {
element = stack.peek();
i = 1;
min = Integer.MAX_VALUE;
while (i <= numberOfNodes) {
if (adjacencyMatrix[element][i] > 1 && visited[i] == 0) {
if (min > adjacencyMatrix[element][i]) {
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag) {
visited[dst] = 1;
stack.push(dst);
System.out.print(dst + "t");
minFlag = false;
continue;
}
stack.pop();
}
}
public static void main(String args) {
if(args.length<2) {
System.out.println("Two arguments required <city> <numbers>");
System.exit(-1);
}
int number_of_nodes=Integer.parseInt(args[0]);
String splitText = args[1].split(" +");
int mat = new int[splitText.length];
for (int i = 0; i < splitText.length; i++) {
mat[i] = Integer.parseInt(splitText[i]);
}
try {
int adjacency_matrix = new int[number_of_nodes + 1][number_of_nodes + 1];
int count = 0;
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (count == mat.length)
break;
adjacency_matrix[i][j]= mat[(i-1) * number_of_nodes + (j-1)];
count++;
}
}
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (adjacency_matrix[i][j] == 1 && adjacency_matrix[j][i] == 0) {
adjacency_matrix[j][i] = 1;
}
}
}
System.out.println("the citys are visited as follows");
TSPNearestNeighbour tspNearestNeighbour = new TSPNearestNeighbour();
tspNearestNeighbour.tsp(adjacency_matrix);
} catch (InputMismatchException inputMismatch) {
System.out.println("Wrong Input format");
}
}
}
answered Nov 21 at 18:23
abhishek chaurasiya
462
answered Nov 21 at 18:23
abhishek chaurasiya
462
answered Nov 21 at 18:23
abhishek chaurasiya
462
answered Nov 21 at 18:23
abhishek chaurasiya
462
462
According to my logic the java class is working fine. I just wanted to know regarding passing values. So, i will try what you have explained and let me see.
– Abhishek
Nov 22 at 16:02
Okay let me know if it worked (and you can accept the answer if it worked)
– abhishek chaurasiya
Nov 23 at 5:07
I used your concept and it's working.
– Abhishek
2 days ago
add a comment |
According to my logic the java class is working fine. I just wanted to know regarding passing values. So, i will try what you have explained and let me see.
– Abhishek
Nov 22 at 16:02
Okay let me know if it worked (and you can accept the answer if it worked)
– abhishek chaurasiya
Nov 23 at 5:07
I used your concept and it's working.
– Abhishek
2 days ago
According to my logic the java class is working fine. I just wanted to know regarding passing values. So, i will try what you have explained and let me see.
– Abhishek
Nov 22 at 16:02
According to my logic the java class is working fine. I just wanted to know regarding passing values. So, i will try what you have explained and let me see.
– Abhishek
Nov 22 at 16:02
Okay let me know if it worked (and you can accept the answer if it worked)
– abhishek chaurasiya
Nov 23 at 5:07
Okay let me know if it worked (and you can accept the answer if it worked)
– abhishek chaurasiya
Nov 23 at 5:07
I used your concept and it's working.
– Abhishek
2 days ago
I used your concept and it's working.
– Abhishek
2 days ago
add a comment |
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Where is that "program" running?
– JGlass
Nov 21 at 15:47
Where do you want to pass them?
– Jonathan Laliberte
Nov 21 at 15:52
Actually this is where even I'm confused.. If I separately run the program by creating separate .java file in intellij and run. It's working fine by accepting command line inputs. So I wanted a web interface for that and my progress is this. So how to pass these inputted parameters exactly to program? So, please guide me on this.
– Abhishek
Nov 21 at 16:04
@Jonathan I have highlighted the place where I want to pass the argument,please check
– Abhishek
Nov 21 at 16:06