class A 
{ 
void m1()throws InterruptedException 
{ 
System.out.println("hello"); 
} 
} 
class B extends A 
{ 
void m1()throws InterruptedException 
{ 
for(int i=0;i<5;i++) 
{ 
Thread.sleep(1000); 
System.out.println("Welcome"); 
} 
} 
public static void main(String args[]) 
{ 
B x=new B(); 
try 
{ 
x.m1(); 
}