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I've compiled a HelloWorld program, and I'm using the command prompt to run it. The .class file is named HelloWorld2.class The file is located in C:\Users\Matt\workspace\HelloWorld2\bin Here's what I'm getting when I go to command prompt, and type "Java HelloWorld2" : C:\Users\Matt>Java HelloWorld2 Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorld2 Caused by: java.lang.ClassNotFoundException: HelloWorld2 at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) Could not find the main class: HelloWorld2. Program will exit. I was expecting to see a HelloWorld printed out. What am I doing wrong? I have the JDK installed.
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