Let's start some work on the jail command.

src/main/java/com/graywolf336/jail/command/commands/JailCommand.java

@@ -1,12 +1,15 @@
 package com.graywolf336.jail.command.commands;
 
+import java.util.concurrent.TimeUnit;
+
+import org.bukkit.ChatColor;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 
 import com.beust.jcommander.JCommander;
 import com.beust.jcommander.ParameterException;
-
 import com.graywolf336.jail.JailManager;
+import com.graywolf336.jail.beans.Prisoner;
 import com.graywolf336.jail.command.Command;
 import com.graywolf336.jail.command.CommandInfo;
 import com.graywolf336.jail.command.parameters.JailParameters;
@@ -22,24 +25,31 @@ import com.graywolf336.jail.command.parameters.JailParameters;
 public class JailCommand implements Command {
 
 	public boolean execute(JailManager jm, CommandSender sender, String... args) {
+		
+		if(jm.getJails().size() == 0) {
+			sender.sendMessage(ChatColor.RED + "No jails found.");
+			return true;
+		}
+		
 		JailParameters params = new JailParameters();
 		
 		try {
 			new JCommander(params, args);
 		}catch(ParameterException e) {
-			sender.sendMessage(e.getMessage());
+			sender.sendMessage(ChatColor.RED + e.getMessage());
 			return true;
 		}
 		
-		
+		Long time = Long.parseLong(params.time());
 		Player p = jm.getPlugin().getServer().getPlayer(params.player());
+		Prisoner pris = new Prisoner(params.player(), params.muted(), TimeUnit.MILLISECONDS.convert(time, TimeUnit.MINUTES));
 		
 		//Player is not online
 		if(p == null) {
-			sender.sendMessage(params.player() + " is offline and will be jailed for " + params.time() + " minutes in the jail " + params.jail() + "in the cell " + params.cell() + " and will be muted: " + params.muted() + ".");
+			sender.sendMessage(pris.getName() + " is offline and will be jailed for " + pris.getRemainingTime() + " milliseconds in the jail " + params.jail() + "in the cell " + params.cell() + " and will be muted: " + pris.isMuted() + ".");
 		}else {
 			//Player *is* online
-			sender.sendMessage(params.player() + " is online and will be jailed for " + params.time() + " minutes in the jail " + params.jail() + "in the cell " + params.cell() + " and will be muted: " + params.muted() + ".");
+			sender.sendMessage(pris.getName() + " is online and will be jailed for " + pris.getRemainingTime() + " milliseconds in the jail " + params.jail() + "in the cell " + params.cell() + " and will be muted: " + pris.isMuted() + ".");
 		}
 		
 		return true;

src/main/java/com/graywolf336/jail/command/parameters/JailParameters.java

@@ -16,7 +16,7 @@ public class JailParameters {
 	@Parameter
 	private List<String> parameters = new ArrayList<String>();
 	
-	@Parameter(names = { "-p", "-player", "-prisoner" }, description = "The name of the player we are jailing.")
+	@Parameter(names = { "-p", "-player", "-prisoner" }, description = "The name of the player we are jailing.", required = true)
 	private String player = "";
 	
 	@Parameter(names = { "-t", "-time", "-length" }, description = "The length of the jailing sentence.")
@@ -49,11 +49,21 @@ public class JailParameters {
 		return time;
 	}
 	
+	/** Sets the time parameter. */
+	public void setTime(String time) {
+		this.time = time;
+	}
+	
 	/** Returns the jail parameter. */
 	public String jail() {
 		return jail;
 	}
 	
+	/** Sets the jail parameter. */
+	public void setJail(String jail) {
+		this.jail = jail;
+	}
+	
 	/** Returns the cell parameter. */
 	public String cell() {
 		return cell;
@@ -64,6 +74,11 @@ public class JailParameters {
 		return muted;
 	}
 	
+	/** Sets the muted parameter. */
+	public void setMuted(boolean muted) {
+		this.muted = muted;
+	}
+	
 	/** Returns the reason compressed into one string. */
 	public String reason() {
 		String r = "";

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

@@ -5,6 +5,8 @@ import junit.framework.Assert;
 import org.junit.Test;
 
 import com.beust.jcommander.JCommander;
+import com.beust.jcommander.ParameterException;
+
 import com.graywolf336.jail.command.parameters.JailParameters;
 
 public class TestCommandParams {
@@ -23,4 +25,12 @@ public class TestCommandParams {
 		Assert.assertEquals("The muted is false.", true, jail.muted());
 		Assert.assertEquals("Jailed reason didn't match up.", "He was a very bad boy.", jail.reason());
 	}
+	
+	@Test(expected=ParameterException.class)
+	public void TestFailedJailCommand() {
+		JailParameters jail = new JailParameters();
+		String[] params = { "-t", "30", "-j", "den", "-c", "cell_01", "-m", "-r", "He", "was", "a", "very", "bad", "boy." };
+		
+		new JCommander(jail, params);
+	}
 }