Uppercase Conversion
1
import java.util.Scanner;
import java.io.*;
public class UppercaseFileConverter {
public static void main(String args) throws FileNotFoundException{
Scanner input = new Scanner(System.in);
System.out.println("Enter the name of the file to be read: Here is the file converted into Uppercase.");
String fileName = input.nextLine();
File file = new File(fileName);
Scanner inputFile = new Scanner(file);
//validates that the file exists
if (!file.exists()) {
System.out.println("The file " + fileName + " does not exist or could not be opened.");
System.exit(0);
}
//if file exists then reads each line and prints the upper case
else {
while (inputFile.hasNext()) {
String line = inputFile.nextLine();
System.out.println(line.toUpperCase());
}
}
inputFile.close();
System.out.println("Files read, converted and then closed.");
}
}
When I run my code, my validation that checks whether the file entered exists or not does not run but instead terminates the program. Can I use a try/catch?
java try-catch
edited Nov 28 '18 at 5:26
lucumt
5,73021023
asked Nov 28 '18 at 5:22
peopleGuy5peopleGuy5
133
add a comment |
1
import java.util.Scanner;
import java.io.*;
public class UppercaseFileConverter {
public static void main(String args) throws FileNotFoundException{
Scanner input = new Scanner(System.in);
System.out.println("Enter the name of the file to be read: Here is the file converted into Uppercase.");
String fileName = input.nextLine();
File file = new File(fileName);
Scanner inputFile = new Scanner(file);
//validates that the file exists
if (!file.exists()) {
System.out.println("The file " + fileName + " does not exist or could not be opened.");
System.exit(0);
}
//if file exists then reads each line and prints the upper case
else {
while (inputFile.hasNext()) {
String line = inputFile.nextLine();
System.out.println(line.toUpperCase());
}
}
inputFile.close();
System.out.println("Files read, converted and then closed.");
}
}
When I run my code, my validation that checks whether the file entered exists or not does not run but instead terminates the program. Can I use a try/catch?
java try-catch
edited Nov 28 '18 at 5:26
lucumt
5,73021023
asked Nov 28 '18 at 5:22
peopleGuy5peopleGuy5
133
2
Why do you useSystem.exit(0);in your code,if you do not want to do something ,just remove this line
– lucumt
Nov 28 '18 at 5:26
Yes there might be exception while checking for file, using try/catch will able to find the exact exception.
– iamrajshah
Nov 28 '18 at 5:26
Can you share error logs or it System.exit is called.
– Chetan Joshi
Nov 28 '18 at 6:46
add a comment |
1
1
1
import java.util.Scanner;
import java.io.*;
public class UppercaseFileConverter {
public static void main(String args) throws FileNotFoundException{
Scanner input = new Scanner(System.in);
System.out.println("Enter the name of the file to be read: Here is the file converted into Uppercase.");
String fileName = input.nextLine();
File file = new File(fileName);
Scanner inputFile = new Scanner(file);
//validates that the file exists
if (!file.exists()) {
System.out.println("The file " + fileName + " does not exist or could not be opened.");
System.exit(0);
}
//if file exists then reads each line and prints the upper case
else {
while (inputFile.hasNext()) {
String line = inputFile.nextLine();
System.out.println(line.toUpperCase());
}
}
inputFile.close();
System.out.println("Files read, converted and then closed.");
}
}
When I run my code, my validation that checks whether the file entered exists or not does not run but instead terminates the program. Can I use a try/catch?
java try-catch
edited Nov 28 '18 at 5:26
lucumt
5,73021023
asked Nov 28 '18 at 5:22
peopleGuy5peopleGuy5
133
import java.util.Scanner;
import java.io.*;
public class UppercaseFileConverter {
public static void main(String args) throws FileNotFoundException{
Scanner input = new Scanner(System.in);
System.out.println("Enter the name of the file to be read: Here is the file converted into Uppercase.");
String fileName = input.nextLine();
File file = new File(fileName);
Scanner inputFile = new Scanner(file);
//validates that the file exists
if (!file.exists()) {
System.out.println("The file " + fileName + " does not exist or could not be opened.");
System.exit(0);
}
//if file exists then reads each line and prints the upper case
else {
while (inputFile.hasNext()) {
String line = inputFile.nextLine();
System.out.println(line.toUpperCase());
}
}
inputFile.close();
System.out.println("Files read, converted and then closed.");
}
}
When I run my code, my validation that checks whether the file entered exists or not does not run but instead terminates the program. Can I use a try/catch?
java try-catch
java try-catch
edited Nov 28 '18 at 5:26
lucumt
5,73021023
asked Nov 28 '18 at 5:22
peopleGuy5peopleGuy5
133
edited Nov 28 '18 at 5:26
lucumt
5,73021023
asked Nov 28 '18 at 5:22
peopleGuy5peopleGuy5
133
edited Nov 28 '18 at 5:26
lucumt
5,73021023
edited Nov 28 '18 at 5:26
lucumt
5,73021023
edited Nov 28 '18 at 5:26
lucumt
5,73021023
5,73021023
asked Nov 28 '18 at 5:22
peopleGuy5peopleGuy5
133
asked Nov 28 '18 at 5:22
peopleGuy5peopleGuy5
133
asked Nov 28 '18 at 5:22
peopleGuy5peopleGuy5
133
133
2
Why do you useSystem.exit(0);in your code,if you do not want to do something ,just remove this line
– lucumt
Nov 28 '18 at 5:26
Yes there might be exception while checking for file, using try/catch will able to find the exact exception.
– iamrajshah
Nov 28 '18 at 5:26
Can you share error logs or it System.exit is called.
– Chetan Joshi
Nov 28 '18 at 6:46
add a comment |
2
Why do you useSystem.exit(0);in your code,if you do not want to do something ,just remove this line
– lucumt
Nov 28 '18 at 5:26
Yes there might be exception while checking for file, using try/catch will able to find the exact exception.
– iamrajshah
Nov 28 '18 at 5:26
Can you share error logs or it System.exit is called.
– Chetan Joshi
Nov 28 '18 at 6:46
2
2
Why do you use
System.exit(0); in your code,if you do not want to do something ,just remove this line– lucumt
Nov 28 '18 at 5:26
Why do you use
System.exit(0); in your code,if you do not want to do something ,just remove this line– lucumt
Nov 28 '18 at 5:26
Yes there might be exception while checking for file, using try/catch will able to find the exact exception.
– iamrajshah
Nov 28 '18 at 5:26
Yes there might be exception while checking for file, using try/catch will able to find the exact exception.
– iamrajshah
Nov 28 '18 at 5:26
Can you share error logs or it System.exit is called.
– Chetan Joshi
Nov 28 '18 at 6:46
Can you share error logs or it System.exit is called.
– Chetan Joshi
Nov 28 '18 at 6:46
add a comment |
1 Answer
1
active
oldest
votes
0
You can do three things
1.Remove System.exit()
2.Add null Check before using file object
if (file!=null&&!file.exists()) {}
3.Add try catch block to handle possible exception in your case FileNotFoundException.
answered Nov 28 '18 at 6:51
Chetan JoshiChetan Joshi
3,97021825
I tried a try/catch block and found that the program executed like I wanted to. Thank you.
– peopleGuy5
Nov 28 '18 at 9:33
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
You can do three things
1.Remove System.exit()
2.Add null Check before using file object
if (file!=null&&!file.exists()) {}
3.Add try catch block to handle possible exception in your case FileNotFoundException.
answered Nov 28 '18 at 6:51
Chetan JoshiChetan Joshi
3,97021825
I tried a try/catch block and found that the program executed like I wanted to. Thank you.
– peopleGuy5
Nov 28 '18 at 9:33
add a comment |
0
You can do three things
1.Remove System.exit()
2.Add null Check before using file object
if (file!=null&&!file.exists()) {}
3.Add try catch block to handle possible exception in your case FileNotFoundException.
answered Nov 28 '18 at 6:51
Chetan JoshiChetan Joshi
3,97021825
I tried a try/catch block and found that the program executed like I wanted to. Thank you.
– peopleGuy5
Nov 28 '18 at 9:33
add a comment |
0
0
0
You can do three things
1.Remove System.exit()
2.Add null Check before using file object
if (file!=null&&!file.exists()) {}
3.Add try catch block to handle possible exception in your case FileNotFoundException.
answered Nov 28 '18 at 6:51
Chetan JoshiChetan Joshi
3,97021825
You can do three things
1.Remove System.exit()
2.Add null Check before using file object
if (file!=null&&!file.exists()) {}
3.Add try catch block to handle possible exception in your case FileNotFoundException.
answered Nov 28 '18 at 6:51
Chetan JoshiChetan Joshi
3,97021825
answered Nov 28 '18 at 6:51
Chetan JoshiChetan Joshi
3,97021825
answered Nov 28 '18 at 6:51
Chetan JoshiChetan Joshi
3,97021825
answered Nov 28 '18 at 6:51
Chetan JoshiChetan Joshi
3,97021825
3,97021825
I tried a try/catch block and found that the program executed like I wanted to. Thank you.
– peopleGuy5
Nov 28 '18 at 9:33
add a comment |
I tried a try/catch block and found that the program executed like I wanted to. Thank you.
– peopleGuy5
Nov 28 '18 at 9:33
I tried a try/catch block and found that the program executed like I wanted to. Thank you.
– peopleGuy5
Nov 28 '18 at 9:33
I tried a try/catch block and found that the program executed like I wanted to. Thank you.
– peopleGuy5
Nov 28 '18 at 9:33
add a comment |
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2
Why do you use
System.exit(0);in your code,if you do not want to do something ,just remove this line– lucumt
Nov 28 '18 at 5:26
Yes there might be exception while checking for file, using try/catch will able to find the exact exception.
– iamrajshah
Nov 28 '18 at 5:26
Can you share error logs or it System.exit is called.
– Chetan Joshi
Nov 28 '18 at 6:46