重新捡起JAVA语法之编译问题Exception in thread "main" java.lang.NoClassDefFoundError: String

问题：JAVA语法之编译问题

Exception in thread "main" java.lang.NoClassDefFoundError: StringTest (wrong name: com/StringTest)at java.lang.ClassLoader.defineClass1(Native Method)at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)at java.lang.ClassLoader.defineClass(ClassLoader.java:615)at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)at java.net.URLClassLoader.access$000(URLClassLoader.java:58)at java.net.URLClassLoader$1.run(URLClassLoader.java:197)at java.security.AccessController.doPrivileged(Native Method)at java.net.URLClassLoader.findClass(URLClassLoader.java:190)at java.lang.ClassLoader.loadClass(ClassLoader.java:306)at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)at java.lang.ClassLoader.loadClass(ClassLoader.java:247)Could not find the main class: StringTest.  Program will exit.

?

解决方案：进入程序package所在包的父亲目录，进行编译执行（

例如：1编译、javac package1/package2/...packagen/java程序.java；

?????????? 2执行、java package1/package2/...packagen/java程序）