Contoh Coding JAVA

Coding Java 1 :

Menampilkan tulisan “Hello, World!”.

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public class program1

{

public static void main (String[] args)

{

System.out.print (“Hello, World!”);

}

}

Hasil output di command prompt :

 

Coding Java 2 :

Mencari keliling dari persegi panjang.

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public class program3

{

public static void main (String[] args)

{

int p = 10;

int l = 7;

int Luas = (p*l);

System.out.println(“Nilai p = ” + p);

System.out.println(“Nilai l = ” + l);

System.out.println(“Luas PP = p*l”);

System.out.println(“Maka, Luas PP = ” + Luas);

// untuk memanggil rumus tanpa mendeklarasikannya

System.out.println(“Keliling PP = 2*(p+l)”);

System.out.println(“Maka, Keliling PP = ” + (2*(p+l)));

}

}

Hasil output di command prompt :

 Coding Java 3 :

Mencari luas dan keliling dari bangun datar

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public class bangundatar

{

public static void main (String[] args)

{

int s = 5, p = 10, l = 6, a = 4, t = 7, r = 14;

double phi = 3.14;

int lbs = s * s;

int kbs = 4 * s;

int lpp = p * l;

int kpp = 2*(p + l);

double lst = 0.5 * a * t;

int kst = a + l + l;

int ljg = p * t;

int kjg = 2*(p + l);

double ll = phi * r * r;

double kl = 2 * phi * r;

System.out.println(“RUMUS LUAS DAN KELILING BANGUN DATAR”);

System.out.println(“\n1. BUJUR SANGKAR (PERSEGI)\n—————————————”);

System.out.println(“Rumus Luas\t= s * s\nRumus Keliling\t= 4 * s”);

System.out.println(“\nContoh soal :\nDiketahui : panjang sisi = ” + s);

System.out.println(“Maka, luasnya\t= ” + lbs);

System.out.println(“dan kelilingnya\t= ” + kbs);

System.out.println(“\n2. PERSEGI PANJANG\n—————————————”);

System.out.println(“Rumus Luas\t= p * l\nRumus Keliling\t= 2 * (p+l)”);

System.out.println(“\nContoh soal :\nDiketahui : panjang\t= ” + p);

System.out.println(“\t    lebar\t= ” + l);

System.out.println(“Maka, luasnya\t= ” + lpp);

System.out.println(“dan kelilingnya\t= ” + kpp);

System.out.println(“\n3. SEGI TIGA\n—————————————”);

System.out.println(“Rumus Luas\t= 0.5 * a * t\nRumus Keliling\t= jumlahkan ketiga sisi”);

System.out.println(“\nContoh soal :\nDiketahui : alas\t= ” + a);

System.out.println(“\t    tinggi\t= ” + t);

System.out.println(“\t    sisi kanan\t= ” + l);

System.out.println(“\t    sisi kiri\t= ” + l);

System.out.println(“Maka, luasnya\t= ” + lst);

System.out.println(“dan kelilingnya\t= ” + kst);

System.out.println(“\n4. JAJARAN GENJANG\n—————————————”);

System.out.println(“Rumus Luas\t= p * t\nRumus Keliling\t= 2 * (p+l)”);

System.out.println(“\nContoh soal :\nDiketahui : panjang\t= ” + p);

System.out.println(“\t    lebar\t= ” + l);

System.out.println(“\t    tinggi\t= ” + t);

System.out.println(“Maka, luasnya\t= ” + ljg);

System.out.println(“dan kelilingnya\t= ” + kjg);

System.out.println(“\n5. LINGKARAN\n—————————————”);

System.out.println(“Rumus Luas\t= phi * r * r\nRumus Keliling\t= 2 * phi * r”);

System.out.println(“\nContoh soal :\nDiketahui : phi\t\t= ” + phi);

System.out.println(“\t    jari-jari\t= ” + r);

System.out.println(“Maka, luasnya\t= ” + ll);

System.out.println(“dan kelilingnya\t= ” + kl);

}

}

 Coding Java 4 :

Mencari volume dan luas bangun ruang.

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public class bangunruang

{

public static void main (String[] args)

{

int p = 10, l = 5, t = 3, r = 2, m = 4;

double phi = 3.14;

int vb = p*l*t;

int lpb = 2*(p+l+t);

double vt = phi*r*r*t;

double lpt = 2*phi*r*(r+t);

double vk = 1.046*r*r*t;

double lpk = phi*r*(r+m);

System.out.println(“RUMUS VOLUME DAN LUAS PERMUKAAN BANGUN RUANG”);

System.out.println(“\n1. BALOK\n———————————————”);

System.out.println(“Rumus Volume\t\t= p * l * t\nRumus Luas Permukaan\t= 2 * (p+l+t)”);

System.out.println(“\nContoh soal :\nDiketahui panjang\t= ” + p);

System.out.println(“\t  lebar\t\t= ” + l);

System.out.println(“\t  tinggi\t= ” + t);

System.out.println(“Maka, volumenya\t\t= ” + vb);

System.out.println(“dan Luas permukaanya\t= ” + lpb);

System.out.println(“\n2. TABUNG\n———————————————”);

System.out.println(“Rumus Volume\t\t= phi * r * r * t\nRumus Luas Permukaan\t= 2 * phi * r * (r+t)”);

System.out.println(“\nContoh soal :\nDiketahui phi\t\t= ” + phi);

System.out.println(“\t  tinggi\t= ” + t);

System.out.println(“\t  jari-jari\t= ” + r);

System.out.println(“Maka, volumenya\t\t= ” + vt);

System.out.println(“dan Luas permukaannya\t= ” + lpt);

System.out.println(“\n3. KERUCUT\n———————————————”);

System.out.println(“Rumus Volume\t\t= 1.046 * r * r * t\nRumus Luas Permukaan\t= phi * r * (r+m)”);

System.out.println(“\nContoh soal :\nDiketahui phi\t\t\t= ” + phi);

System.out.println(“\t  tinggi\t\t= ” + t);

System.out.println(“\t  jari-jari\t\t= ” + r);

System.out.println(“\t  sisi miring kerucut\t= ” + m);

System.out.println(“Maka, volumenya\t\t\t= ” + vk);

System.out.println(“dan Luas permukaannya\t\t= ” + lpk);

}

}

Coding Java 5 :

Mencari hasil operasi matematika dasar.

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public class Matematika

{

public static void main (String[] args)

{

int a = 50, b = 32;

double c = 23.88;

System.out.println(“———————”);

System.out.println(“NAMA : RAHMADENI”);

System.out.println(“NIM : 11151101839″);

System.out.println(“KELAS : TIF I C”);

System.out.println(“———————”);

System.out.println(“Soal Umumnya adalah :\nDiketahui :”);

System.out.println(“a = ” +a);

System.out.println(“b = ” +b);

System.out.println(“c = ” +c);

System.out.println(“\n1. Penjumlahan”);

System.out.println(“————–”);

System.out.println(“a. a+b = ” +(a+b));

System.out.println(“b. b+c = ” +(b+c));

System.out.println(“c. a+c = ” +(a+c));

System.out.println(“\n2. Pengurangan”);

System.out.println(“————–”);

System.out.println(“a. a-b = ” +(a-b));

System.out.println(“b. b-c = ” +(b-c));

System.out.println(“c. a-c = ” +(a-c));

System.out.println(“\n3. Perkalian”);

System.out.println(“————”);

System.out.println(“a. a*b = ” +(a*b));

System.out.println(“b. b*c = ” +(b*c));

System.out.println(“c. a*c = ” +(a*c));

System.out.println(“\n4. Pembagian”);

System.out.println(“————”);

System.out.println(“a. a/b = ” +(a/b));

System.out.println(“b. b/c = ” +(b/c));

System.out.println(“c. a/c = ” +(a/c));

System.out.println(“\n5. Mod”);

System.out.println(“——”);

System.out.println(“a. a mod b = ” +(a%b));

System.out.println(“b. b mod c = ” +(b%c));

System.out.println(“c. a mod c = ” +(a%c));

System.out.println(“\n6. Div”);

System.out.println(“——”);

System.out.println(“a. a div b = ” +(a/b));

System.out.println(“b. b div c = ” +(b/c));

System.out.println(“c. a div c = ” +(a/c));

System.out.println(“\n7. Besar dari”);

System.out.println(“————-”);

System.out.println(“a. a>b = ” +(a>b));

System.out.println(“b. b>c = ” +(b>c));

System.out.println(“c. a>c = ” +(a>c));

System.out.println(“\n8. Kurang dari”);

System.out.println(“————–”);

System.out.println(“a. a<b = ” +(a<b));

System.out.println(“b. b<c = ” +(b<c));

System.out.println(“c. a<c = ” +(a<c));

System.out.println(“\n9. Besar sama dengan”);

System.out.println(“——————–”);

System.out.println(“a. a>=b = ” +(a>=b));

System.out.println(“b. b>=c = ” +(b>=c));

System.out.println(“c. a>=c = ” +(a>=c));

System.out.println(“\n10. Kecil sama dengan”);

System.out.println(“———————”);

System.out.println(“a. a<=b = ” +(a<=b));

System.out.println(“b. b<=c = ” +(b<=c));

System.out.println(“c. a<=c = ” +(a<=c));

System.out.println(“\n11. Tidak sama dengan”);

System.out.println(“———————”);

System.out.println(“a. a!=b = ” +(a!=b));

System.out.println(“b. b!=c = ” +(b!=c));

System.out.println(“c. a!=c = ” +(a!=c));

System.out.println(“\n12. Sama dengan”);

System.out.println(“—————”);

System.out.println(“a. a==b = ” +(a==b));

System.out.println(“b. b==c = ” +(b==c));

System.out.println(“c. a==c = ” +(a==c));

}

}

 Coding Java 6 :

Mencari berat badan ideal.

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import java.util.Scanner;

public class beratbadan

{

public static void main (String[] rahmadeni)

{

Scanner input = new Scanner (System.in);

int a;

System.out.println(“Hubungan Berat badan Ideal dengan Tinggi Badan”);

System.out.print(“\nMasukkan tinggi badan anda (dalam cm) = “);

a = input.nextInt();

System.out.println(“\nJadi, Berat badan ideal Anda adalah : “+((a-100)-(0.1*(a-100)))+” kg.”);

}

}

Coding Java 7 :

Mencari kuadran dari titik x dan y.

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import java.util.Scanner;

public class duabelas

{

public static void main (String [] rahmadeni)

{

Scanner input = new Scanner (System.in);

int x, y;

System.out.println(“Menentukan kuadran”);

System.out.println(“\nMasukkan dua buah titik (x, y) :”);

System.out.print(“\tx = “);

x = input.nextInt();

System.out.print(“\ty = “);

y = input.nextInt();

if ((x>0)&&(y>0))

{

System.out.println(“Titik-titik berada pada kuadran I”);

}

else if ((x<0)&&(y>0))

{

System.out.println(“Titik-titik berada pada kuadran II”);

}

else if ((x<0)&&(y<0))

{

System.out.println(“Titik-titik berada pada kuadran III”);

}

else if ((x>0)&&(y<0))

{

System.out.println(“Titik-titik berada pada kuadran IV”);

}

}

}

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