找错 Java 计算器 谢谢各位了
Exception in thread "main" java.lang.NoClassDefFoundError: Counter
Caused by: java.lang.ClassNotFoundException: Counter
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Could not find the main class: Counter. Program will exit.
编译正确 但是当输入java Counter
按enter时出现上面的文字 为何 ? 谢谢各位了