Java use pro

Convert java int to Integer object

public class IntToIntegerExample

{

public static void main(String[] args)

 {

int i = 10;

Integer intObj = new Integer(i);

System.out.println(intObj);

  }

}

Convert octal number to decimal number

public class ConvertOctalToDecimalNumber

{

public static void main(String[] args)

{

String strOctalNumber = "33";

int decimalNumber = Integer.parseInt(strOctalNumber,8);

System.out.println("Octal number converted to decimal number");

System.out.println("Decimal number is : " + decimalNumber);

    }

}

Simple Java Integer

public class IntegerExample

{

public static void main(String[] args)

{

Integer intObj1 = new Integer(10);

Integer intObj2 = new Integer("10");

System.out.println(intObj1);

System.out.println(intObj2);

   }

}

Try Catch in Java

class Example2

{

 public static void main(String args[])

{

     try

      {

         int a[]=new int[7];

         a[4]=30/0;

         System.out.println("First print statement in try block");

     }

     catch(ArithmeticException e)

    {

        System.out.println("Warning: ArithmeticException");

     }

     catch(ArrayIndexOutOfBoundsException e)

     {

        System.out.println("Warning: ArrayIndexOutOfBoundsException");

      }

     catch(Exception e)

     {

        System.out.println("Warning: Some Other exception");

     }

   System.out.println("Out of try-catch block...");

  }

}