Eclipse Java HelloWorld

最新推荐文章于 2024-09-01 15:10:32 发布

转载最新推荐文章于 2024-09-01 15:10:32 发布 · 898 阅读

文章标签：

本文介绍如何在Eclipse中创建一个简单的Java程序——HelloWorld。步骤包括新建Java项目和Java类，并在主方法中编写打印语句，最后运行程序。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

How do I write a simple "Hello World" program?

To write a "Hello World" program follow these steps:

Start Eclipse.
Create a new Java Project:
1. File->New->Project.
2. Select "Java" in the category list.
3. Select "Java Project" in the project list. Click "Next".
4. Enter a project name into the Project name field, for example, "Hello World Project".
5. Click "Finish"--It will ask you if you want the Java perspective to open. (You do.)
Create a new Java class:
1. Click the "Create a Java Class" button in the toolbar. (This is the icon below "Run" and "Window" with a tooltip that says "New Java Class.")
2. Enter "HelloWorld" into the Name field.
3. Click the checkbox indicating that you would like Eclipse to create a "public static void main(String[] args)" method.
4. Click "Finish".
A Java editor for HelloWorld.java will open. In the main method enter the following line.
System.out.println("Hello World");
Save using ctrl-s. This automatically compiles HelloWorld.java.
Click the "Run" button in the toolbar (looks like a little man running).
You will be prompted to create a Launch configuration. Select "Java Application" and click "New".
Click "Run" to run the Hello World program. The console will open and display "Hello World".