Java Learning Note 32

The stack inherits from the Vector class, which is similar to "stack", which is a last-in, first-out (LIFO) object stack that expands the class vector by five operations

Allow the vector to be treated as a stack. It provides the usual push and pop operations, and a peek method that takes a stack vertex, whether the test stack is empty

The empty method, finds in the stack, and determines the search method to the top distance of the stack.

Let's look at a deeper understanding of the stack:

According to, we know that stack is similar to a stack, we liken the stack to a bucket, the bottom is sealed, and now we're going to object_1 the stack, and

The object_2 followed by the Object_3 and finally the Object_4, in the stack, and if we want to get the elements from the bottom, the only way

is to get the stack bottom element by first stacking the above elements sequentially, so the vector is a last-in-first-out stack.

Here's how the vector class is used:

public class Main {public static void main (string[] args) {/* * Creates an empty stack */stack stack=new stack ();/* Detects whether the current stack is empty (null returns TRU E, which returns false), the following stack is empty */system.out.println (Stack.empty ());//Next several elements are pushed into the stack by push Stack.push ("object_1"); Stack.push (" Object_2 "); Stack.push (" Object_3 "); Stack.push (" Object_4 ");//Now we look for the specified element in the stack and return the location of the element// The following output: 2system.out.println (Stack.search ("Object_3"));/* View the object at the top of the stack through peek, but not remove it from the stack. *///output: Object_4System.out.println (Stack.peek ());//output: [Object_1, Object_2, Object_3, Object_4]system.out.println ( stack);/* Removes the object at the top of the stack via pop, * and returns the object as the value of this function. *///output: Object_4System.out.println (Stack.pop ());//output: [Object_1, Object_2, object_3]system.out.println (stack);}}

Reprint Please specify source: http://blog.csdn.net/hai_qing_xu_kong/article/details/44159585 Emotional Control _  

Java Learning Note 32