write a program to show user defined Exception in the following condition: you have to enter the salary of a person at runtime and the salary must be a non-negative number & should be in between 6,000 & 20,000. and if it is not it will throw a user defined exception named.

class MyException extends Exception

{

 private int salary;

 MyException(int s)

  {

  salary=s;

  }

 public String toString()

  {

    return "MyException[" + salary +"]";

  }

 }

class ExceptionDemo

 {

  static void compute(int s) throws MyException

  {

   System.out.println("main exception(" + s + ")");

   if((s>60000)&&(s<20000))

   throw new MyException(s);

   System.out.println("no exception");

  }

 public static void main(String args[])

  {

  try

   {

   int s=Integer.parseInt(System.console().readLine("Enter the salary :"));

   compute(s);

   }

   catch(MyException e)

   {

      System.out.println("caugth;"+e);

   }

  }

 }

Write a program to Nested try blocks

class NestTry

 {

  public static void main(String args[])

  {

    try

    {

     int a = args.length;

     int b = 42 / a;

     System.out.println("a = " + a);

     try

      { // nested try block

       if(a==1) a = a/(a-a); // division by zero

      if(a==2)

       {

        int c[] = { 1 };

        c[42] = 99;

     }

   }

 catch(ArrayIndexOutOfBoundsException e)

  {

   System.out.println("Array index out-of-bounds: " + e);

  }

}

  catch(ArithmeticException e)

   {

    System.out.println("Divide by 0: " + e);

   }

  }

}

Write a program to try-catch-finally combination.

public class TryCatchFinally

{

   public static void main(String args[])

   {

      int a[] = new int[2];

      try

      {

         System.out.println("Access element three :" + a[3]);

      }

      catch(ArrayIndexOutOfBoundsException e)

      {

         System.out.println("Exception thrown  :" + e);

      }

      finally

      {

         a[0] = 6;

         System.out.println("First element value: " +a[0]);

         System.out.println("The finally statement is executed");

      }

   }

}

Write a program to Multiple catch blocks.

class Multicatch

{

public static void main(String args[])

{

try

{

int a=args.length;

System.out.println(" "+a);

int b=32/a;

int c[]=new int[5];

c[]=

}

catch(ArithmeticException e)

{

System.out.println("Ist catch"+e);

}

catch(ArrayIndexOutofBoundException e)

{

System.out.println("IInd catch"+e);

}

System.out.println("after catch");

}

}