■コード
package hello.java.util;
import java.util.Stack;
public class HelloStack {
public static void main(String[] args) {
Stack stack = new Stack();
String s1 = "abc";
String s2 = "xyz";
Integer i1 = new Integer(3);
stack.push(s1);
stack.push(s2);
stack.push(i1);
int size = stack.size();
for(int n=0;n<size;n++){
System.out.println(stack.pop().toString());
}
}
}
■結果
3
xyz
abc