1).Persegi Panjang
import java.util.Scanner;
public class persegi_panjang{
public static void main(String [] args){
int panjang,lebar,luas,keliling;
Scanner S = new Scanner (System.in);
System.out.print("masukan panjang=");
panjang=S.nextInt();
System.out.print("masukan lebar=");
lebar=S.nextInt();
luas=(panjang*lebar);
keliling=2*(panjang+lebar);
System.out.println("luas persegi panjang adalah="+luas);
System.out.println("keliling persegi panjang adalah="+keliling);
}
}
Out put
masukan panjang=54
masukan lebar=96
luas persegi panjang adalah=5184
keliling persegi panjang adalah=300
2)Bujur Sangkar
import java.util.Scanner;
public class Bujur_Sangkar {
public static void main(String []args){
int sisi,luas,keliling;
Scanner O=new Scanner (System.in);
System.out.print("masukan sisi=");
sisi=O.nextInt();
luas=(sisi*sisi);
System.out.println("luas dari Bujur Sangkar adalah="+luas);
keliling=(4*sisi);
System.out.println("luas dari Bujur Sangkar adalah="+keliling);
}
}
Out put
masukan sisi=78
luas dari Bujur Sangkar adalah=6084
luas dari Bujur Sangkar adalah=312
3)Segitiga
import java.util.Scanner;
public class Segitiga{
public static void main(String[]args){
int alas,tinggi,luas;
Scanner F=new Scanner(System.in);
System.out.print("input tinggi=");
tinggi=F.nextInt();
System.out.print("input alas=");
alas=F.nextInt();
luas=(alas*tinggi)/2;
System.out.print("luas segitiga="+luas);
}
}
Out put
input tinggi=589
input alas=366
luas segitiga=107787
4)Lingkaran
import java.util.Scanner;
public class lingkaran {
public static void main(String [] args){
double phi=3.14;
double r,luas,keliling;
Scanner I=new Scanner (System.in);
System.out.print("jari-jari lingkaran=");
r=I.nextInt();
luas=phi*r*r;
keliling=2*phi*r;
System.out.println("luas lingkaran="+luas);
System.out.println("keliling="+keliling);
}
}
Out put
jari-jari lingkaran=777
luas lingkaran=1895709.06
keliling=4879.56
5).Karakter
class cahar{
public static void main(String[]arags){
int three=3;
char one='1';
char four=(char)(three+one);
System.out.println("nilai variabel three="+three);
System.out.println("nilai variabel one="+one);
System.out.println("nilai variabel four="+four);
}
}
Out put
nilai variabel three=3
nilai variabel one=1
nilai variabel four=4
6).Logika
class logika{
public static void main(String []args){
boolean A=true;
boolean B=false;
boolean C= A & B;
boolean D= A | B ;
System.out.println("logika A="+A);
System.out.println("logika B="+B);
System.out.println("logika C="+C);
System.out.println("logika D="+D);
}
}
Out put
logika A=true
logika B=false
logika C=false
logika D=true
7).Class Operator Penugasan
class operator_penugasan{
public static void main(String []args){
int var = 1;
int a,b,c;
a=b=c=99;
System.out.println("nilai variabel adalah="+var);
System.out.println("nilai A adalah="+a);
System.out.println("nilai B adalah="+b);
System.out.println("nilai C adalah="+c);
}
}
Out put
nilai variabel adalah=1
nilai A adalah=99
nilai B adalah=99
nilai C adalah=99
8). Matematika
class matematika{
public static void main(String[]args){
int x=10;
int y=2;
char z='a';
int a=z*10;
int b=x+y;
int c=x-y;
int d=x/y;
int e=x % y;
System.out.println("hasil A="+a);
System.out.println("hasil B="+b);
System.out.println("hasil C="+c);
System.out.println("hasil D="+d);
System.out.println("hasil E="+e);
}
}
Out put
hasil A=970
hasil B=12
hasil C=8
hasil D=5
hasil E=0
9).penaikan
class penaikan{
public static void main(String [] args){
int x=10;
int y,z;
System.out.println("nilai x="+x);
System.out.println("nilai y="+ ++x);
System.out.println("nilai z= "+x++);
}
}
Out put
nilai x=10
nilai y=11
nilai z= 11
10).operator logika
class operatorLogika{
public static void main(String[]args){
boolean A=true;
boolean B=false;
boolean C=A & B;
boolean D=A ^ B;
System.out.println("hasil A="+A);
System.out.println("hasil B="+B);
System.out.println("hasil C="+C);
System.out.println("hasil D="+D);
Out put
hasil A=true
hasil B=false
hasil C=false
hasil D=true
11).class penurnan
class penurunan{
public static void main (String []args){
int x=15;
int y,z;
System.out.println("nilai x="+x);
System.out.println("nilai y="+ --x);
System.out.println("nilai z="+x--);
}
}
Out put
nilai x=15
nilai y=14
nilai z=14
12).class relasional
class relasional{
public static void main(String []args){
int x;
if ('x'>10);
{
x=0;
}
System.out.println("hasil x="+x);
}
}
Out put
hasil x=0
13).class majemuk
class majemuk{
public static void main(String[]args){
int a=5;
int b=2;
int c=3;
a+=5;
b*=4;
c+=a*b;
c%=b*a;
System.out.println("hasil A="+a);
System.out.println("hasil B="+b);
System.out.println("hasil C="+c);
}
}
Out put
hasil A=10
hasil B=8
hasil C=3