array2D
class Array2D {
public static void main(String[] args) {
int[][] arrx; // Cara 1 Array 2 Dimensi
arrx = new int[3][3];
arrx[0][0] = 1;
arrx[0][1] = 2;
arrx[0][2] = 3;
arrx[1][0] = 4;
arrx[1][1] = 5;
arrx[1][2] = 6;
arrx[2][0] = 7;
arrx[2][1] = 8;
arrx[2][2] = 9;
System.out.println("Nilai arrx[0] : " + arrx[0][0]);
System.out.println("Nilai arrx[0] : " + arrx[0][1]);
System.out.println("Nilai arrx[0] : " + arrx[0][2]);
System.out.println("Nilai arrx[1] : " + arrx[1][0]);
System.out.println("Nilai arrx[1] : " + arrx[1][1]);
System.out.println("Nilai arrx[1] : " + arrx[1][2]);
System.out.println("Nilai arrx[2] : " + arrx[2][0]);
System.out.println("Nilai arrx[2] : " + arrx[2][1]);
System.out.println("Nilai arrx[2] : " + arrx[2][2]);
int[][] arry = {{10,20,30},{40,50,60},{70,80,90}} ; // Cara 2 Array 2
//Dimensi dgn ukuran 3 * 3 = 9
System.out.println("Nilai arry[0] : " + arry[0][0]);
System.out.println("Nilai arry[0] : " + arry[0][1]);
System.out.println("Nilai arry[0] : " + arry[0][2]);
System.out.println("Nilai arry[1] : " + arry[1][0]);
System.out.println("Nilai arry[1] : " + arry[1][1]);
System.out.println("Nilai arry[1] : " + arry[1][2]);
System.out.println("Nilai arry[2] : " + arry[2][0]);
System.out.println("Nilai arry[2] : " + arry[2][1]);
System.out.println("Nilai arry[2] : " + arry[2][2]);
}
}

array multi dimensi

class ArrayMultiD {
public static void main(String[] args) {
int[][][] arr3 = {{{10,20,30},{40,50,60}},
                  {{11,21,31},{41,51,61}},
                  {{12,22,32},{42,52,62}}}; // ukuran 3 * 6 = 18
System.out.println("Nilai arr3[0] : " + arr3[0][0][0]);
System.out.println("Nilai arr3[0] : " + arr3[0][0][1]);
System.out.println("Nilai arr3[0] : " + arr3[0][0][2]);
System.out.println("Nilai arr3[0] : " + arr3[0][1][0]);
System.out.println("Nilai arr3[0] : " + arr3[0][1][1]);
System.out.println("Nilai arr3[0] : " + arr3[0][1][2]);
System.out.println("Nilai arr3[1] : " + arr3[1][0][0]);
System.out.println("Nilai arr3[1] : " + arr3[1][0][1]);
System.out.println("Nilai arr3[1] : " + arr3[1][0][2]);
System.out.println("Nilai arr3[1] : " + arr3[1][1][0]);
System.out.println("Nilai arr3[1] : " + arr3[1][1][1]);
System.out.println("Nilai arr3[1] : " + arr3[1][1][2]);
System.out.println("Nilai arr3[2] : " + arr3[2][0][0]);
System.out.println("Nilai arr3[2] : " + arr3[2][0][1]);
System.out.println("Nilai arr3[2] : " + arr3[2][0][2]);
System.out.println("Nilai arr3[2] : " + arr3[2][1][0]);
System.out.println("Nilai arr3[2] : " + arr3[2][1][1]);
System.out.println("Nilai arr3[2] : " + arr3[2][1][2]);
}
}

array

public class SingleArray {
public static void main(String[] args) {
int [] x; // Cara 1
x = new int[3];
x[0] = 20 ;
x[1] = 10 ;
x[2] = 30;
System.out.println("Nilai x[0] : " + x[0]);
System.out.println("Nilai x[1] : " + x[1]);
System.out.println("Nilai x[2] : " + x[2]);
String [] y = new String[3]; // Cara 2
y[0] = "Joko budi bagus" ;
y[1] = "Budi" ;
y[2] = "Iwan";
System.out.println("Nilai y[0] : " + y[0]);
System.out.println("Nilai y[1] : " + y[1]);
System.out.println("Nilai y[2] : " + y[2]);
char[] z = {'a','b','c'}; // Cara 3 tdk menggunakan new
System.out.println("Nilai z[0] : " + z[0]);
System.out.println("Nilai z[1] : " + z[1]);
System.out.println("Nilai z[2] : " + z[2]);
}
}

whiledo

class WhileDo{
    public static void main(String [] args){
        int a = 5;
 
        do{
            System.out.println(a);
           //a=a+1;
            //System.out.println(a);
        }
        while (a<5);
       
       
    }
}

do while

class DoWhile1{
    public static void main(String [] args){
        int a = 1;
 
        do{
            System.out.println(a);
            a=a+1;
            //System.out.println(a);
        }
        while (a<20);
       
       
    }
}

IF

public class IF{
public static void main(String args[]){
double grade=60;
if(grade>=90){
System.out.println("Sangat bagus");
}
else if(grade>=70){
System.out.println("bagus");
}
else if(grade>=50){
System.out.println("Cukup");
}
else{
System.out.println("Sedang");
}
}
}