使用Groovy代码执行Java类

Question

I am trying to execute a java .class file using groovy script :

    def sout = new StringBuffer(), serr = new StringBuffer()
    def proc = "java ${fileName}".execute()
    proc.consumeProcessOutput(sout, serr)
    proc.waitFor()
    println "out> $sout err> $serr"

It gives error: err> Error: Could not find or load main class cle47d1d78d99a44a8ba01f0bc7612ad16 (class name generated using uuid). But when I execute it in bash it gives proper output. I checked filename, pwd and ensured that the .class file exist in the folder where groovy tries to execute command.

I am able to run other commands and also compile .java file successfully using:

def proc = "javac ${file.path}".execute()

Please suggest.

Answer 1

What is the value of ${fileName} . I think it contains value like "ABC.java" . Where as you must use command "java ${className}".

Use:

java ${className}

ex:
If com.abc.ABC is the class containing the main function
java com.abc.ABC 

Package is also necessary