Contoh Program Try Catch

class tes
{
    public static void main(String[]args){
        System.out.println("start program");
        try{
            System.out.println(10/0);
        }
        catch(Exception e){
            System.out.println("Terjadi kesalahan >>"+e.getMessage());
        }
        finally{
            System.out.println("pembagian nol");
        }
        System.out.println("end of program");
    }
}

Contoh Program Java Array 1 Dimensi

class Array_1
{
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(" \nNilai y[1]:" + y[1]);
System.out.println(" \nNilai y[2]:" + y[2]);


}}

Maaf Karena admin jarang buka blog jadi seadanya dulu yah hehehe

Program Java Depresiasi

import java.util.Scanner;

class Depresiasi {
    public static void main(String[] args) {
        long biaya;
        int i, jum, tahun;
        double depresiasi;

        Scanner scan = new Scanner(System.in);
       
        System.out.print("Biaya : ");
        biaya = scan.nextLong();

        System.out.print("Tahun : ");
        tahun = scan.nextInt();

        jum =  tahun * (tahun + 1) / 2;
for (i = 1; i <= tahun; i++) {
            depresiasi = (tahun + 1.0 - i) / jum * biaya;
            System.out.println(
                String.format("%2d %10.0f",
                    i, depresiasi));
        }
    }
}

Program Java Operator Aritmatika

// Berkas: OperatorPlusPlus.java

public class OperatorPlusPlus {
    public static void main(String[] args) {
        int x, y;

        x = 5;
        y = 8 - x++;
        System.out.println("Contoh 1:");
        System.out.println("x = " + x +
                         " y = " + y);
        x = 5;
        y = 8 - ++x;
        System.out.println("Contoh 2:");
        System.out.println("x = " + x +
                           " y = " + y);
        x = 5;
        y = 8 - x--;
        System.out.println("Contoh 3:");
        System.out.println("x = " + x +
                           " y = " + y);
        x = 5;
        y = 8 - --x;
        System.out.println("Contoh 4:");
        System.out.println("x = " + x +
                           " y = " + y);
    }
}

Program Java Swing

import javax.swing.JOptionPane;
public class swing{
  public static void main(String []args)
 
  {
   
    String name = " ";
    name =JOptionPane.showInputDialog("please enter your name here ");
    String msg ="Hello "+name+ "Kamu Berhasil !!!";
    JOptionPane.showMessageDialog(null,msg);
  }
}

Program Java Swing

import javax.swing.JOptionPane;
public class swing{
  public static void main(String []args)
 
  {
   
    String name = " ";
    name =JOptionPane.showInputDialog("please enter your name here ");
    String msg ="Hello "+name+ "Kamu Berhasil !!!";
    JOptionPane.showMessageDialog(null,msg);
  }
}

Program Java Segitiga Bilangan

import java.util.Scanner;

class SegitigaBilangan {
    public static void main(String[] args) {
        int i, j, tinggi, bil;
       
        Scanner scan = new Scanner(System.in);
       
        System.out.print("Tinggi segitiga : ");
        tinggi = scan.nextInt();
       
        for (i = 1; i <= tinggi; i++) {
            bil = i;
            for (j = 1; j <= i; j++) {
                System.out.print(
                    String.format("%3d", bil));
                bil = bil + tinggi - j;  
            }
           
            System.out.println(); // Pindah baris  
        }
    }

Program Java Mencari Faktorial Bilangan

import java.util.Scanner;

class Faktorial {
    public static void main(String[] args) {
        int bil, n;
        long hasil;

        Scanner scan = new Scanner(System.in);
       
        System.out.print("n =  ");
        n = scan.nextInt();

hasil = 1;
for (bil = n; bil >= 1; bil--)
            hasil = hasil * bil;

System.out.println(n + "! = " + hasil);
    }
}

Java Aplet Sederhana

import java.awt.Graphics; public class HH extends java.applet.Applet{ public void paint (Graphics gggg) { gggg.drawString("Alhamdullillah", 20, 40); }; }

Program Buffered Reader Java

import java.io.*; class buff_InStream_IoEx_1 { public static void main (String[]xxx) throws Exception { InputStreamReader input = new InputStreamReader(System.in); BufferedReader data = new BufferedReader (input); //BufferedReader data = new BufferedReader (new InputStreamReader (System.in)); System.out.print("\nMasukkan Nama Anda \t: "); String nama = data.readLine(); // menmasukkan hasil input ke variabel System.out.println("Terima Kasih " + nama); } }

File Reader Mencari vol Balok

import java.io.*; class filereader_volumebalok1 { public static void main(String[]args){ String s; int P,L,T,volume; try { FileReader fr = new FileReader("D://coba.txt")//taruh file di direcktory yang benar dan isikan angka angka; BufferedReader br = new BufferedReader(fr); s=br.readLine(); P=Integer.parseInt(s.substring(2,4)); L=Integer.parseInt(s.substring(3,5)); T=Integer.parseInt(s.substring(8,10)); volume=P*L*T; System.out.println("Panjang "+P +"Lebar "+L +"Tinggi "+T+" maka luas="+volume+"\n"); } catch(Exception e){ System.out.println("wuih >>"+e.getMessage()); } } }

Program Java Mencari FPB (scanner)

import java.util.Scanner; class Fpb { public static void main(String[] args) { int m, n, r; Scanner scan = new Scanner(System.in); System.out.print("m : "); m = scan.nextInt(); System.out.print("n : "); n = scan.nextInt(); r = m % n; while (r != 0) { m = n; n = r; r = m % n; } System.out.println("FPB = " + n); } }