kodingan

Genapganjil

import javax.swing.*;

class genapganjil{

public static void main(String[] args){

int A;JOptionPane genapganjil = new JOptionPane ("genap ganjil");

A = Integer.valueOf(JOptionPane.showInputDialog ("Masukan Angka = "));

if (A%2==0)

System.out.println ( A + " "+ "Adalah Bilangan Genap");

else {

System.out.println (A +" " +"Adalah Bilangan Ganjil");

}

}

}

Segitiga

class segitiga{

public static void main(String[] args){

int a = 4;

int x,y,z;

for (x=0;x<a ;x++ ){

for (y=a;y>x ;y-- ){

System.out.print (" ");

}

for (z=0;z<y ;z++ ){

System.out.print ("0 ");

}

System.out.println ();

}

}

}

Piramida

public class piramid {

public static void main (String[]args) {

System.out.println("PIRAMIDA SETENGAH KANAN");

for (int a=1; a<=5; a++) {

for (int b=1; b<=a-1; b++) {

System.out.print("*");

}

System.out.println("*");

}

System.out.println("\n");

System.out.println("PIRAMIDA SETENGAH KIRI");

for (int a=1; a<=5; a++) {

for(int c=1; c<=5-a; c++) {

System.out.print(" ");

}

for (int b=1; b<=a-1; b++) {

System.out.print("*");

}

System.out.println("*");

}

System.out.println("\n");

System.out.println("PIRAMIDA PENUH");

for (int a=1; a<=5; a++) {

for(int c=1; c<=5-a; c++) {

System.out.print(" ");

}

for (int d=1; d<=a-1; d++) {

System.out.print("*");

}

for (int b=1; b<=a-1; b++) {

System.out.print("*");

}

System.out.println("*");

}

}

}

Array 1 dimensi

class Array1dimensi{

public static void main (String [] args ){

  int[]x= new int[3];

x [0] = 1;

x [1] = 2;

x [2] = 3;

System.out.println(x[0]);

System.out.println(x[1]);

System.out.println(x[2]);

}

}