Stuff

import javax.swing.JOptionPane; 
	public class RandomNumber{ 
		public static void main(String args[]){ 
			String random_result = "";
			int a; 
			int b;
			int powerof;  
			boolean end = false; 
while(end==false){ 
		a =(int)(Math.random()*4)+5; 
		b =(int)(Math.random()*4)+5; 
		powerof = (int)Math.pow(a, b); 
		random_result = random_result+ a + " ^ " + b + " = " + powerof + "\n";   
if(JOptionPane.showConfirmDialog(null,"Do you want to continue?","RandomNumber",JOptionPane.YES_NO_OPTION)==0){ 
		end = false; 
}else{ 
		end = true; 
	} 
} 

			JOptionPane.showMessageDialog(null,random_result); 
 
		System.exit(0); 
	} 
}