contoh program array dalam Java

class array5 {
    public static void main(String args[]){
        // Langkah 1: deklarasi variabel array dan penciptaan
        int int2DUnequalArr[][] = new int[4][];
        int2DUnequalArr[0] = new int[1];
        int2DUnequalArr[1] = new int[2];
        int2DUnequalArr[2] = new int[3];
        int2DUnequalArr[3] = new int[4];
        int k=0;
        for (int i=0;i<4;i++) {
            for (int j=0;j<i+1;j++){
                int2DUnequalArr [i][j] = k++;
            }
        }
       
        for (int i=0;i<4;i++) {
            for (int j=0;j<i+1;j++){
                System.out.print(int2DUnequalArr[i][j] + " ");
            }
            System.out.println();
        }
    }
}