我无法在CMD中运行java程序

Question

I can't run the java program in the CMD,but it's OK in the eclipse.

These are my configures:

CLASSPATH:.;%JAVA_HOME%\\lib\\dt.jar;%JAVA_HOME%\\lib\\tools.jar

JAVA_HOME:C:\\Program Files\\Java\\jdk1.7.0_03

PATH:%JAVA_HOME%\\bin;%JAVA_HOME%\\jre\\bin

I don't think there is something wrong with the program,because I am not successful in running even one program.All these programs come from the official website of Head First Java.I can use javac without any problems.

I can only provide these now.If you need more information.I'll provide it to you.

Answer 1

You should be in f:\\pro\\hfjavafinalsamples and run

java chap01.BeerSong

You need to give the java command the fully qualified class name, which according to the error message is chap01.BeerSong . Then java will look for the class BeerSong within the chap01 package by checking in the chap01 directory.

Note that Java is case-sensitive as well, even though the file system isn't - the class simple name is BeerSong , not beersong .