Home Java javaTutorial Java stack class usage examples (how to use stack in java)

Java stack class usage examples (how to use stack in java)

Jan 24, 2017 pm 03:00 PM

In JAVA, use the constructor method of the java.util.Stack class to create objects.

public class Stack extends vector

Constructor method: public Stack() creates an empty Stack.

Method: 1. public push (item) Push the item onto the top of the stack. Its effect is the same as addElement (item).

Parameter item is the item pushed onto the top of the stack. Return: item parameter;

2. public pop () removes the object on top of the stack and returns the object as the value of the function.

Return: The top object of the stack (the last item in the Vector object).

Throws exception: EmptyStackException if the stack is empty. . .

3. public peek() View the object on top of the stack without removing it. .

Return: The top object of the stack (the last item in the Vector object).

Throws exception: EmptyStackException if the stack is empty. . .

4. public boolean empty (tests whether the stack is empty.) Returns true if and only if the stack does not contain any items, otherwise returns false.

5. public int search (object o) Returns the position of the object in the stack, with 1 as the base. If object o is an item in the stack, this method returns the distance from the nearest occurrence position to the top of the stack; the distance to the top item in the stack is 1. Use the equals method to compare o with items on the stack. . .

Parameters: o Target object;

/** 
 * @author yuanLi
 */
package thinkingJava;
import java.util.*;

import com.sun.org.apache.bcel.internal.generic.NEW;
/** 
 * 
 */
public class StackTest {

    /**
     * @param args
     */
    public static void main(String[] args) {
        Stack stack = new Stack(); // 创建堆栈对象 
        System.out.println("11111, absdder, 29999.3 三个元素入栈"); 
        stack.push(new Integer(11111)); //向 栈中 压入整数 11111
        printStack(stack);  //显示栈中的所有元素

        stack.push("absdder"); //向 栈中 压入
        printStack(stack);  //显示栈中的所有元素

        stack.push(new Double(29999.3)); //向 栈中 压入
        printStack(stack);  //显示栈中的所有元素

        String s = new String("absdder");
        System.out.println("元素absdder在堆栈的位置"+stack.search(s));      
        System.out.println("元素11111在堆栈的位置"+stack.search(11111));

        System.out.println("11111, absdder, 29999.3 三个元素出栈"); //弹出 栈顶元素 
        System.out.println("元素"+stack.pop()+"出栈");
        printStack(stack);  //显示栈中的所有元素
        System.out.println("元素"+stack.pop()+"出栈");
        printStack(stack);  //显示栈中的所有元素
        System.out.println("元素"+stack.pop()+"出栈");
        printStack(stack);  //显示栈中的所有元素

 
    }

    private static void printStack(Stack<Integer> stack ){
        if (stack.empty())
            System.out.println("堆栈是空的,没有元素");
            else {
                System.out.print("堆栈中的元素:");
                Enumeration items = stack.elements(); // 得到 stack 中的枚举对象 
                while (items.hasMoreElements()) //显示枚举(stack ) 中的所有元素
                    System.out.print(items.nextElement()+" ");
            }
        System.out.println(); //换行
    }
}
Copy after login

For more java stack class usage examples (how to use stack in java) related articles, please pay attention to the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Roblox: Bubble Gum Simulator Infinity - How To Get And Use Royal Keys
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Nordhold: Fusion System, Explained
1 months ago By 尊渡假赌尊渡假赌尊渡假赌
Mandragora: Whispers Of The Witch Tree - How To Unlock The Grappling Hook
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Clair Obscur: Expedition 33 - How To Get Perfect Chroma Catalysts
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1677
14
PHP Tutorial
1278
29
C# Tutorial
1257
24
Is the company's security software causing the application to fail to run? How to troubleshoot and solve it? Is the company's security software causing the application to fail to run? How to troubleshoot and solve it? Apr 19, 2025 pm 04:51 PM

Troubleshooting and solutions to the company's security software that causes some applications to not function properly. Many companies will deploy security software in order to ensure internal network security. ...

How do I convert names to numbers to implement sorting and maintain consistency in groups? How do I convert names to numbers to implement sorting and maintain consistency in groups? Apr 19, 2025 pm 11:30 PM

Solutions to convert names to numbers to implement sorting In many application scenarios, users may need to sort in groups, especially in one...

How to simplify field mapping issues in system docking using MapStruct? How to simplify field mapping issues in system docking using MapStruct? Apr 19, 2025 pm 06:21 PM

Field mapping processing in system docking often encounters a difficult problem when performing system docking: how to effectively map the interface fields of system A...

How to elegantly obtain entity class variable names to build database query conditions? How to elegantly obtain entity class variable names to build database query conditions? Apr 19, 2025 pm 11:42 PM

When using MyBatis-Plus or other ORM frameworks for database operations, it is often necessary to construct query conditions based on the attribute name of the entity class. If you manually every time...

How does IntelliJ IDEA identify the port number of a Spring Boot project without outputting a log? How does IntelliJ IDEA identify the port number of a Spring Boot project without outputting a log? Apr 19, 2025 pm 11:45 PM

Start Spring using IntelliJIDEAUltimate version...

How to safely convert Java objects to arrays? How to safely convert Java objects to arrays? Apr 19, 2025 pm 11:33 PM

Conversion of Java Objects and Arrays: In-depth discussion of the risks and correct methods of cast type conversion Many Java beginners will encounter the conversion of an object into an array...

E-commerce platform SKU and SPU database design: How to take into account both user-defined attributes and attributeless products? E-commerce platform SKU and SPU database design: How to take into account both user-defined attributes and attributeless products? Apr 19, 2025 pm 11:27 PM

Detailed explanation of the design of SKU and SPU tables on e-commerce platforms This article will discuss the database design issues of SKU and SPU in e-commerce platforms, especially how to deal with user-defined sales...

How to use the Redis cache solution to efficiently realize the requirements of product ranking list? How to use the Redis cache solution to efficiently realize the requirements of product ranking list? Apr 19, 2025 pm 11:36 PM

How does the Redis caching solution realize the requirements of product ranking list? During the development process, we often need to deal with the requirements of rankings, such as displaying a...

See all articles