java中的栈Stack的基本使用和应用（一）

Stack stack=new Stack();

stack.empty()

stack.peek()

stack.push(Object);

stack.pop();

public class Test01 {
public static void main(String[] args) {
Stack stack=new Stack();
//1.empty()栈是否为空
System.out.println(stack.empty());
//2.peek()栈顶值    3.进栈push()
stack.push(new Integer(1));
stack.push("b");
System.out.println(stack.peek());
//4.pop()出栈
stack.pop();
System.out.println(stack.peek());

}
}