java.lang.ClassNotFoundException:org.apache.commons.text.WordUtils [英] java.lang.ClassNotFoundException: org.apache.commons.text.WordUtils

问题描述

我不知道为什么在这里得到ClassNotFoundException，因为我已经为WorkUtils编译了适当的jar文件，而WordUtils类显然在jar文件中.

I can't figure out why I'm getting a ClassNotFoundException here, since I have compiled with the appropriate jar file for WorkUtils, and the class WordUtils is clearly in the jar file.

我使用 javac -d bin -cp lib/commons-text-1.2.jar MyClass.java 进行了编译并使用 java -cp bin MyClass

I compiled with javac -d bin -cp lib/commons-text-1.2.jar MyClass.java and run with java -cp bin MyClass

这是我的java类:

import org.apache.commons.text.WordUtils;

class MyClass
{
    public static void main(String[] args) {

        System.out.println(WordUtils.capitalize("sample text"));

    }
}

我收到此错误:

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/text/WordUtils
    at MyClass.main(MyClass.java:11)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.text.WordUtils
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

任何人都知道这里可能出什么问题吗?

Anyone know what could be going wrong here?

推荐答案

该库还必须发送到 java :

java -cp bin:lib/commons-text-1.2.jar MyClass

如果您使用的是Windows，则可能需要将:替换为;

If you're on Windows, you may need to replace : with ;

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