AVAJAVA Web Tutorials

The SystemUtils class in the Commons LangS library provides a large set of public static fields which allow for convenient access to System Property values. This comes in very handy if your IDE features code completion, like EclipseSW, shown below.

In general, it can be fairly difficult to remember the particular name of a System property (to plug into System.getProperty()). However, SystemUtils plus code completion makes it unnecessary to memorize a bunch of System property names.

The UserNameTest class is a simple example of using SystemUtils to get the current user name.

UserNameTest.java

package test;

import org.apache.commons.lang.SystemUtils;

public class UserNameTest {

	public static void main(String args[]) throws Exception {

		System.out.print("User name from SystemUtils: ");
		System.out.println(SystemUtils.USER_NAME);
	}
}

The output of UserNameTest is shown here.

Results

User name from SystemUtils: Deron

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