Tugas pemrogramman 3 semester 3 [1 - 4]

dataku.txt

96983749632949234689234932649236493289469236
97938249732432432238497320949032430432048032
23432432432214241948194708207210381300923801
92479864912741970123821038021362137092832080
92638238735497324937983209402374093280432048
93274903270483204709380380480234032083204830
92374023091730170301203018021380273074343293
23423543657878985663453524325346478756856475

no1.java

/**
 * program array 2 dimensi
 *
 * @author (Cahya, Robi, Iqbal, Budi)
 * @version (0.1 8/10/2017)
 */

public class no1
{
    public static void main(String [] args) 
    {    
        // membuat isi elemen array
        int [][] angka = {
            {0, 1, 2, 3, 4},
            {5, 6, 7, 8, 9},
            {10, 11, 12, 13, 14},
            {15, 16, 17, 18, 19}
        };
 
        int i, j; // i = baris v, j = kolom >
        
        for (i=0;i<4;i++)
        {
            for (j=0;j<5;j++)
            {
                // menampilkan isi elemen baris dan kolom
                System.out.print(angka[i][j]+" ");  
            }
            System.out.println("");
        }//pindah baris
    }
}

no2.java

/**
 * program substring
 *
 * @author (Cahya, Robi, Iqbal, Budi)
 * @version (0.1 8/10/2017)
 */

public class no2
{
    public static void main(String [] args) 
    {  
        String a = "Saya_adalah_String_a";

        /** 
        *   Dua method substring tersebut adalah sebagai berikut :
        *       1. substring(int beginIndex)
        *       2. substring(int beginIndex, int endIndex)
        *   Sebagai catatan "int beginIndex" dimulai dari 0 
        **/

        String b = a.substring(2);
        String c = a.substring(0, 2);

        System.out.println(b);
        System.out.println(c);
    }
}

no3.java

/**
 * program Hitung Nilai
 *
 * @author (Cahya, Robi, Iqbal, Budi)
 * @version (0.1 8/10/2017)
 */
 
import java.io.*;

public class no3
{
    public static void main(String [] args)
    {
        String a = "iniibubudi";
        String b = "123456789";

        // variabel C akan menghasilkan nilai 2345
        int c= Integer.parseInt(b.substring(1,5));

        // variabel D akan menghasilkan nilai 67
        int d= Integer.parseInt(b.substring(5,7));

        System.out.println(a.substring(1,5));

        // variabel C + D sama dengan 2345+67=2412
        System.out.println(c+d);
    }
}

no4.java

/**
 * program Volume Balok
 *
 * @author (Cahya, Robi, Iqbal, Budi)
 * @version (0.1 8/10/2017)
 */

import java.io.*;
public class no4
{ 
    public static void main(String[] args)
    { 
        String s;
        int p,l,t,volume;
        
        try
        { 
            FileReader fr = new FileReader("dataku.txt");
            BufferedReader br = new BufferedReader(fr);
            
            while((s=br.readLine()) != null)
            { 
                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.printf("Panjang %d Lebar %d "+" Tinggi %d maka volume = %d\n",p,l,t,volume);
            }
            br.close();
        } 
        catch(IOException e) { 
            System.err.println("File read error"); 
        }
    }
}