我有一个已编译的 Java 类:
Echo.class
public class Echo {
public static void main (String arg) {
System.out.println(arg);
}
}
我使用 cd
命令进入到目录并输入:java Echo "hello"
结果出现错误:
C:\Documents and Settings\joe\My Documents\projects\Misc\bin>java Echo "hello"
Exception in thread "main" java.lang.NoClassDefFoundError: Echo
Caused by: java.lang.ClassNotFoundException: Echo
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)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
Could not find the main class: Echo. Program will exit.
如何以最简单的方式将我的Java代码转换成可以在命令行中运行而不是必须使用Eclipse IDE?