Java program to create user defined exception handling

import java.io.*; class myException extends Exception { myException()   { System.out.println("Error:Password too short");   }   myException(int n)   { System.out.println("Error:Only adults can join");   } } class user_exception { public static void main(String s[])throws IOException,myException   { BufferedReader br=new BufferedReader(new InputStreamReader(System.in));     try     { System.out.print("Enter user name : ");       String n=br.readLine();       System.out.print("Enter your password : ");       String m=br.readLine();       if(m.length() <6)         throw new myException();       System.out.print("Enter your age : ");       int o=Integer.parseInt(br.readLine());       if(o<18)         throw new myException(o);     }     catch(Exception e)     {    }   } }    Output

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Java program to illustrate exception handling

import java.lang.ArithmeticException; import java.util.*;                                //import util package public class ExceptionDemo {  public static void main(String s[])   {   Scanner b1=new Scanner(System.in);     try      {  System.out.println("Enter the Divident?");         double a=b1.nextDouble();         System.out.println("Enter the Divisor?");         double b=b1.nextDouble();       if(b==0)   //Throwing an Exception using throw        throw new ArithmeticException("Division by zero!");        double res=a/b;        System.out.println("Result of"+a+"/"+b+"is"+res);      }   //Handles input mismatch exception caused by  //entering a non-integer value at th point   catch(InputMismatchException e)        {  System.out.println("Error:"+e);} //Handles the divide-by-zero ArithmeticException   catch(ArithmeticException ae)       {  System.out.println("Error:"+ae);}    } } Output

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Java program to Implement Runnable class

class childthread implements Runnable
{
Thread t;
childthread()
{
t=new Thread(this,"odd");
System.out.println("child created "+t);
t.start();
}
public void run()
{
try
{
for(int i=1;i<10;i++)
 {
 System.out.println("child "+i);
 i++;
 Thread.sleep(500);
 }
}
catch(InterruptedException e)
{}
}
}
class oddeventhread
{
public static void main(String[] s)
{
 childthread c= new childthread();
try
{
 for(int i=2;i<=10;i++)
  {
   System.out.println("even "+i);
   i++;
   Thread.sleep(1000);
  }
}
catch(InterruptedException e)
{}
}
}

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Program to do Exception Handling in java

import java.lang.Throwable;
class exception
{
public static void main(String[] args)
{
int c;
int a=5;
int b=0;
try
{
System.out.println("Hellow....");
c=a/b;
System.out.println("Haiii");
}
catch(Exception e)
{
System.out.println(e);
}
System.out.println("yippeeeee");
}
}

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