如何在Eclipse中运行简单的Java程序？ [英] How to Run a Simple Java Program in Eclipse?

问题描述

你可能从问题本身来理解，我是Java的新手。
我得到一个练习来写一个Java程序，它接收一个字符，打印它和Unicode表中的下一个字符。

As you can probably understand from the question itself, I'm new to Java. I was given an exercise to write a Java program which receives a character, prints it and the next character in the Unicode table.

现在，

public static void main(String[] args){
    char c = args[0].charAt(0);
    char c1 = (char)(c + 1);
    System.out.println(c + "\t" + c1);
}

我理解这个代码的基本思想，但我试图运行代码在Eclipse中我得到一个恼人的错误：

I understand basic idea of this code, but I'm trying to run this code in Eclipse I get an annoying error:

线程main中的异常java.lang.ArrayIndexOutOfBoundsException：0
MainClass.main（MainClass.java： 9）

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0 at MainClass.main(MainClass.java:9)

注意：我还没有运行一个Java程序，实际上接收的东西作为参数，所以我猜这是一个愚蠢的初学者的错误...这里是完整的我试图在Eclipse中编译的代码：

Note: I have yet to run a Java program that actually receives something as a parameter so I guess it's a stupid beginners' mistake... Here is the full code that I tried to compile in Eclipse:

public class MainClass {

    /**
     * @param args
     */

    public static void main(String[] args){
        char c = args[0].charAt(0);
        char c1 = (char)(c + 1);
        System.out.println(c + "\t" + c1);
    }
}

提前感谢

推荐答案

• 从菜单中选择运行 - >运行配置。


• 在左侧列表中搜索您的项目，然后选择它。


• 选择右侧的参数标签。


• 单击运行


• Select "Run -> Run Configurations" from the menu.
• Search for you project in the list on the left and select it.
• Select the "Arguments" tab on the right.
• Write the argument you want to pass to the programm in "Programm arguments".
• Click "Run"

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