We're going to be using jcommander for parsing of the commands.

http://jcommander.org/

src/test/java/test/java/com/graywolf336/jail/TestJCommander.java

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+package test.java.com.graywolf336.jail;
+
+import junit.framework.Assert;
+
+import org.junit.Test;
+
+import com.beust.jcommander.JCommander;
+
+import test.java.com.graywolf336.jail.util.JCommanderExample;
+
+public class TestJCommander {
+	@Test
+	public void testIt() {
+		JCommanderExample jce = new JCommanderExample();
+		String[] args = { "-log", "2", "-groups", "unit" };
+		new JCommander(jce, args);
+		
+		Assert.assertEquals(jce.verbose.intValue(), 2);
+		Assert.assertEquals(jce.groups.toLowerCase(), "unit");
+	}
+}

src/test/java/test/java/com/graywolf336/jail/util/JCommanderExample.java

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+package test.java.com.graywolf336.jail.util;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import com.beust.jcommander.Parameter;
+
+public class JCommanderExample {
+	@Parameter
+	public List<String> parameters = new ArrayList<String>();
+	
+	@Parameter(names = { "-log", "-verbose" }, description = "Level of verbosity")
+	public Integer verbose = 1;
+
+	@Parameter(names = "-groups", description = "Comma-separated list of group names to be run")
+	public String groups;
+	
+	@Parameter(names = "-debug", description = "Debug mode")
+	public boolean debug = false;
+}