Java

assert rankToString(ACE).equals("Ace");
assert rankToString(DEUCE).equals("Deuce");

boolean rankToString(ACE) == "Ace";
boolean rankToString(DEUCE) == "Deuce";
assert rankToString(ACE) == "Ace";
assert rankToString(DEUCE) == "Deuce";

// Broken! - action is contained in assertion<br />
    assert names.remove(null);

// Fixed - action precedes assertion
    boolean nullsRemoved = names.remove(null);
    assert nullsRemoved;  // Runs whether or not asserts are enabled

kanishka_3000 wrote:

Couldn't find any loop which waits for input events any where in Swing or awt code

kanishka_3000 wrote:

Only extending from Frame works.

import java.io.IOException;
import java.io.InputStreamReader;
import java.io.BufferedReader;


public class Sum 
{
   public void getvalue() throws NumberFormatException, IOException
   {
   	System.out.println("Enter two numbers :");
   	 BufferedReader br =new BufferedReader(new InputStreamReader(System.in));
   	int a=Integer.parseInt(br.readLine());
   	
   	int b=Integer.parseInt(br.readLine());
        
   	
   }
	
	
   public int sum(int a,int b)
    {
   	       return(a+b);
    }
    public static void main(String args[]) throws NumberFormatException, IOException
     {
       Sum obj=new Sum();
       obj.getvalue();
       int sum=obj.sum(int a,int b);
       System.out.println("Sum :"+ sum);
     }
}

class Sum {
  protected int a;
  protected int b;

  public void getvalue() throws NumberFormatException, IOException
  {
   System.out.println("Enter two numbers :");
   BufferedReader br =new BufferedReader(new InputStreamReader(System.in));

   a=Integer.parseInt(br.readLine());
   b=Integer.parseInt(br.readLine());
  }

  public int sum(int a,int b)
   {
          return(a+b);
   }

  static void main(String args[]) {
      Sum obj=new Sum();
      obj.getvalue();
      int sum=obj.sum(obj.a,obj.b);
      System.out.println("Sum :"+ sum);
  }
}