Parameter passed to java command while running JUnit test case

I would like to understand the meaning of the following command,with regards to JUnit:

java junit.swingui.TestRunner MoneyTest

The above command opens up the result of the testcase in JUnit Swing GUI. Whats the meaning of passing开发者_开发知识库 junit.swingui.TestRunner to the java command as a parameter ?

Thank You

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You're instructing the JRE to run the junit.swingui.TestRunner class and pass it the argument MoneyTest