java运行是错误提示，求解

[程序小小望]

C:\Users\Administrator\workspace\chuanzhi\bin\com\c07016>java UdpSent

Exception in thread "main" java.lang.NoClassDefFoundError: UdpSent (wrong name:
com/c07016/UdpSent)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$000(Unknown Source)
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: UdpSent. Program will exit.


在myeclipse下运行正常，在cmd下编译通过，运行时就出现上述提示。

[五哥]

public class Test10 {

	public static void main(String []args){
		String ss = "I am a student,I come from tianjin";
		String Keywords = ss.replaceAll("I[^(come)]come","")
		.replaceAll("tianjin", "");
		System.out.println(Keywords);


	}
}

结果：

I am a student, from

[戏子]

你的程序在一个文件里边吗？

[五哥]

UdpSent
这个java中带有package，
所以 需要java xxx.UdpSent

[nmyangym]

如果在当前目录下,用:
java -cp ..\.. com.c07016.UdpSent

或者退两级目录：
C:\Users\Administrator\workspace\chuanzhi\bin>java com.c07016.UdpSent

[shenhua]

上面的说得对，你有package