Java-program-/Q1.java at main · Jashwanth33/Java-program- · GitHub

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package day31;
import java.util.*;


public class Q1 {


	public static void main(String[] args) {
		// TODO Auto-generated method
		 Stack<Integer> s1=new Stack<Integer>();
		 s1.push(200);
		 s1.push(400);
		 s1.push(500);
		 //s1.push("hello");//err//compile time type safety
		 int k=s1.pop();
		 int k1=s1.pop();
		 System.out.println(k); System.out.println(k1);


	}

}