JAVA

java try catch

try {
  // Code that may have error
} catch(ErrorName e){
  // Another code
}

try catch java

public class MyClass {
  public static void main(String[ ] args) {
    try {
      int[] myNumbers = {1, 2, 3, 4, 5, 6};
      System.out.println(myNumbers[10]);
    } catch (Exception e) {
      System.out.println("Something went wrong. check again");
    }
  }
}
 

What is a try block in java?

Java try block is used to enclose the code that might throw an exception

try block in java

try {
  //  Block of code to try
}
catch(Exception e) {
  //  Block of code to handle errors
}

java try catch

try {
  // Code to try, which is throwing an Exception, e.g.
  /*example*/ Thread.sleep(100)
} catch (InterruptedException e /*Or any other exception*/) {
  // Handle Exception, usually:
  e.printStackTrace(); // Print the StackTrace of the exception to see what cause it
} finally {
  // Code executed after try / catch, used to close streams
  /*example*/ in.close();
}

java try and catch

import java.io.*;
import java.util.Scanner;
public class Test {
    public static void main(String args[]) throws Exception {

        String input;
        int ch1;
        float ch2;
        String ch3;

        Scanner one = new Scanner(System.in);

        input = one.nextLine();

        try {
            ch1 = Integer.parseInt(input);
            System.out.println("integer");
            return;
        } catch (NumberFormatException e) {


        }

        try {
            ch2 = Float.parseFloat(input);
            System.out.println("float");
            return;
        } catch (NumberFormatException e) {

        }
        try {
            ch3 = String.valueOf(input);
            System.out.println("String");
        } catch (NumberFormatException e) {

        }


    }
}

java try and catch

int midterm;
  System.out.printLn("Enter midterm grade");
  do
  { 
      try {
          string s = in.nextLine();
          midterm = Integer.parseInt(s);
          break;
      }
      catch (Exception e)
      {
          System.out.printLn("Couldn't parse input, please try again");
      }
  }
  while (true);

java try catch

try{
  //Code that is checked for error
} catch(Exception e){
  //Code runs when error is caught
}

Java try...catch block

try {
  // code
}
catch(Exception e) {
  // code
}

Java try...catch

try{
  // code
}
catch(exception) {
  // code
}

Java try...catch block

class Main {
  public static void main(String[] args) {

    try {
      int divideByZero = 5 / 0;
      System.out.println("Rest of code in try block");
    }

    catch (ArithmeticException e) {
      System.out.println("ArithmeticException => " + e.getMessage());
    }
  }
}

Java Exception handling using try...catch

class Main {
  public static void main(String[] args) {

    try {

      // code that generate exception
      int divideByZero = 5 / 0;
      System.out.println("Rest of code in try block");
    }
    
    catch (ArithmeticException e) {
      System.out.println("ArithmeticException => " + e.getMessage());
    }
  }
}

try catch in java

try block: code that is protected for any exceptions. and it is mandatory 
(only try)
catch block: if any exception happens during runtime in the try block, 
the catch block will catch that exception.
if any exception happens during runtime in the try block, 
control will be given to catch block.
An optional finally block gives us a chance to run the code which 
we want to execute EVERYTIME a try-catch block is completed 
– either with errors or without any error.