Java当中的栈

1.常用方法

        Java当中提供了一个类：Stack，并且实现了泛型

2.实列

        

import java.util.Stack;  
 
public class StackTest {  
  
    public static void main(String[] args) {  
        Stack stack = new Stack();  
        System.out.println("now the stack is " + isEmpty(stack));  
        stack.push("1");  
        stack.push("2");  
        stack.push("3");  
        stack.push("4");  
        stack.push("5");  
        System.out.println("now the stack is " + isEmpty(stack));  
        System.out.println(stack.peek());  
        System.out.println(stack.pop());  
        System.out.println(stack.pop());  
        System.out.println(stack.search("2"));  
    }  
    public static String isEmpty(Stack stack) {  
        return stack.empty() ? "empty" : "not empty";  
    }  
}