java queue

QueueTest.java

/*
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 * and open the template in the editor.
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package org.omenk;

/**
 *
 * @author omenkzz
 */
public class QueueTest {

    private int[] queue;
    int currIndex = 0;

    public QueueTest(int n) {
        queue = new int[n];

    }

    /**
     * increase antrian
     */
    private void incrementSize() {
        int[] naik = new int[queue.length + 1];
        for (int i = 0; i < queue.length; i++) {
            naik[i] = queue[i];
        }
        queue = naik;
    }

    /**
     * tambah data ke antrian
     */
    public void enquee(int i) {
        if (currIndex >= queue.length) {
            incrementSize();
        }
        queue[currIndex] = i;
        currIndex++;
        System.out.println("enquee: " + i);
    }

    /**
     * move the queue up
     */
    public void moveUp() {
        for (int x = 0; x < queue.length - 1; x++) {
            queue[x] = queue[x + 1];
        }
    }

//    remove antrian
    public int dequee() {
        int r = queue[0];
        moveUp();
        currIndex--;
        System.out.println("removing: quee:" + r);
        return r;
    }

    /**
     * menampilkan data antrian
     */
    public void display() {
        System.out.println("========= display ========== ");
        for (int i = 0; i < queue.length; i++) {
            System.out.println("[" + i + "] = " + queue[i]);
        }
        System.out.println("=============================");
    }

    public void preCondition() {
        System.out.println("========= preCondition =========");
        display();
    }

    public void postCondition() {
        System.out.println(" ========= postCondition =========");
        display();
    }
    
     public void process() {
        System.out.println("========= process =========");
        enquee(1);
        enquee(2);
        enquee(3);
        enquee(4);
        enquee(5);
        dequee();
        dequee();
        enquee(6);
        enquee(7);
    }

    public static void main(String[] args) {
        int size = 5;
        if (args.length > 0) {
            size = Integer.parseInt(args[0]);
        }
        QueueTest q = new QueueTest(size);
        q.preCondition();
        q.process();
        q.postCondition();
        
    }
}