TestStack.java

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package teststack;

/**
 *
 * @author paulb
 */
import java.util.Stack;

class TestStack {
    public static void main(String[] args) {
        Stack mystack1 = new Stack();
        Stack mystack2 = new Stack();

        for (int i = 0; i < 10; i++) mystack1.push(i);
        for (int i = 0; i < 20; i++) mystack2.push(i);

        System.out.println("Stack in mystack1:");
        for(int i = 0; i < 10; i++)
            System.out.println(mystack1.pop());

        System.out.println("Stack in mystack2:");
        for(int i = 0; i < 10; i++)
            System.out.println(mystack2.pop());
    }
}