Hasil Perkalian (No Input User)

public class ar {

    public static void main(String[] args) {
    int a=10;
    int b=20;
    int c=a*b;
        System.out.println("Hasil a * b = c, \n\t"+a+"*"+b+"="+c);
    }

}

Membuat Desimal (No Input User)

public class ar {

    public static void main(String[] args) {
    int a=61;
    int b=64;
    int c=127;
    System.out.printf("a ditampilkan sebagai desimal = [%d]\n",a);
    System.out.printf("a ditampilkan sebagai desimal = [%3d]\n",a);   
    System.out.printf("a ditampilkan sebagai karakter = [%c]\n",a);
    System.out.printf("b ditampilkan sebagai karakter = [%c]\n",b);
    System.out.printf("c ditampilkan sebagai karakter = [%c]\n",c);   
}

}

Hitungan Pecahan (No input user)

public class al {

    public static void main(String[] args) {
    double x=1;
    double y=2;
    double a=0;
    double b=3;
    double c=7;
    double z=(3+4*x)/5-10*(y-5)*(a+b+c)/x+9*(4/x+(9+x)/y);
   
    System.out.println( "Nilai z adalah  "+z);
    }

}

Inputan nama (Dasar)

import java.util.Scanner;

public class a{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
   
        System.out.println("Masukkan nama anda : ");
        String a = sc.next();
        System.out.println("halo "+a);
    }
}

Drawing, Save and Load Data

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.Scanner;


/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
/**
 *
 * @author Faridl
 */
public class Main {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        SaveCoordinat simpan = new SaveCoordinat();
        System.out.println("================MainMenu====================");
        System.out.println("=============Choose Your Number=============");
        System.out.println("1. Drawing");
        System.out.println("2. Save Coordinat");
        System.out.println("3. Re-Load Coordinat");
        System.out.println("4. Exit");
        System.out.println("********************************************");
        int Select = input.nextInt();
            switch(Select){
                case 1:
                Drawing opened = new Drawing();
                opened.Draw();
                break;
                case 2: try {
                    simpan.simpanFileBaru();
                } catch (IOException ex) {
                    ex.printStackTrace();
                }
                System.out.println("\n");
                break;
                case 3:
                System.out.println("Enter your File Location and Extention");
                String namaFile = input.next();
                try {
                    FileReader br = new FileReader(namaFile);
                    Scanner sc=new Scanner(br);
                    Drawing lihat = new Drawing();
                    lihat.Draw();
                } catch (FileNotFoundException ex) {
                    System.out.println("File not Found");
                }break;
                case 4:
                    System.out.println("Thank you");
                    System.exit(0);
            }
    }
}

Kalkulator (+)/(-) input user

package praktikum5perfection;
import java.util.Scanner;
/**
 *
 * @author Faridl
 */
public class Remote {
    public static void main(String[] args) {
    String Num1,Num2;

    Scanner input = new Scanner(System.in);
        System.out.println("=========Operation Simple Mathematic Begin==========");
        System.out.println("1.Adding Operation");
        System.out.println("2.Minus Operation");
        System.out.println("3.Exit");
        System.out.println("=================Enter Your Choice==================");
        int Select = input.nextInt();
        switch (Select){
            case 1:
                System.out.println("Enter The First Amount:");
                Num1= input.next();
                System.out.println("Enter The Second Amount");
                Num2= input.next();
            System.out.println("The Result : " + Plus.plus(Num1, Num2));
            break;
            case 2:
                System.out.println("Enter The First Amount:");
                Num1= input.next();
                System.out.println("Enter The Second Amount");
                Num2= input.next();
                System.out.println("The Result : "+ Minus.minus(Num1, Num2));
            break;
            case 3:
                System.exit(0);
        }
    }
}