My Npc Generator

package org.genuinesounds.src;

public class Npc {

    private int npcSize;
    private int npcType;
    private String npcName;
    private boolean npcIsFriend;

    private static int npcNumber;

    public static void displayNumberOfNpcs() {
        System.out.printf("There are %s Npcs on the field.\n", npcNumber);
    }

    public static int getNpcNumber() {
        return npcNumber;
    }

    public Npc(final String name) {

        if (name.toLowerCase().trim() == "random")
            generateRandomNpc();
        else {
            npcName = name.trim();
            npcSize = 5;
            npcType = 1;
            npcIsFriend = true;
        }
        npcNumber++;

    }

    public Npc(final String name, final boolean isFriend) {

        if (name.toLowerCase().trim() == "random")
            generateRandomNpc(isFriend);
        else {
            npcName = name.trim();
            npcSize = 5;
            npcType = 1;
        }
        npcIsFriend = isFriend;
        npcNumber++;

    }

    public Npc(final String name, final int size, final int type,
            final boolean isFriend) {

        npcName = name.trim();
        npcSize = size <= 10 ? size : 10;
        npcSize = size >= 1 ? size : 1;
        npcType = type <= 5 ? type : 5;
        npcType = type >= 1 ? type : 1;
        npcIsFriend = isFriend;
        npcNumber++;

    }

    public void displayNpc() {

        System.out.printf("The name of this Npc is %s.\n", npcName);
        System.out.printf("The size of this Npc is %s.\n", npcSize);
        System.out.printf("The type of this Npc is %s.\n", npcType);

        if (npcIsFriend == true)
            System.out.println("This Npc is a friend.\n");
        else
            System.out.println("This Npc is an enemy.\n");

    }

    private void generateRandomNpc() {

        final int size = 1 + (int) (Math.random() * 10);
        final int type = 1 + (int) (Math.random() * 5);
        final int friendGen = (int) (Math.random() * 2);

        boolean friend = false;

        if (friendGen >= 1)
            friend = true;

        final String name = generateRandomNpcName(friend);

        npcName = name;
        npcSize = size;
        npcType = type;
        npcIsFriend = friend;

    }

    private void generateRandomNpc(boolean isFriend) {

        final int size = 1 + (int) (Math.random() * 10);
        final int type = 1 + (int) (Math.random() * 5);

        final String name = generateRandomNpcName(isFriend);

        npcName = name;
        npcSize = size;
        npcType = type;
        npcIsFriend = isFriend;

    }

    private String generateRandomNpcName(boolean isFriend) {

        final String[] nameArray1 = new String[10];
        final String[] nameArray2 = new String[10];
        final String[] nameArray3 = new String[10];
        final String[] nameArray4 = new String[10];

        nameArray1[0] = "Tor";
        nameArray1[1] = "Bal";
        nameArray1[2] = "Get";
        nameArray1[3] = "Naf";
        nameArray1[4] = "Bri";
        nameArray1[5] = "And";
        nameArray1[6] = "Jak";
        nameArray1[7] = "Fla";
        nameArray1[8] = "Cre";
        nameArray1[9] = "Zep";

        nameArray2[0] = "dan";
        nameArray2[1] = "zef";
        nameArray2[2] = "hie";
        nameArray2[3] = "hen";
        nameArray2[4] = "chu";
        nameArray2[5] = "der";
        nameArray2[6] = "min";
        nameArray2[7] = "ish";
        nameArray2[8] = "man";
        nameArray2[9] = "ads";

        nameArray3[0] = "Peaceful";
        nameArray3[1] = "Valiant";
        nameArray3[2] = "Exalted";
        nameArray3[3] = "Tamed";
        nameArray3[4] = "Reverant";
        nameArray3[5] = "Just";
        nameArray3[6] = "Sacred";
        nameArray3[7] = "Friendly";
        nameArray3[8] = "Passive";
        nameArray3[9] = "Heroic";

        nameArray4[0] = "Unchanged";
        nameArray4[1] = "Unknown";
        nameArray4[2] = "Untamed";
        nameArray4[3] = "Undiscovered";
        nameArray4[4] = "Unforseen";
        nameArray4[5] = "Ungodly";
        nameArray4[6] = "Unclean";
        nameArray4[7] = "Undying";
        nameArray4[8] = "Unforgiving";
        nameArray4[9] = "Unjust";

        String name;

        if (isFriend) {
            name = nameArray1[(int) (Math.random() * 10)].toString()
                    + nameArray2[(int) (Math.random() * 10)].toString()
                    + " the "
                    + nameArray3[(int) (Math.random() * 10)].toString();
        }
        else {
            name = nameArray1[(int) (Math.random() * 10)].toString()
                    + nameArray2[(int) (Math.random() * 10)].toString()
                    + " the "
                    + nameArray4[(int) (Math.random() * 10)].toString();
        }
        return name;

    }

}