class TestTipeData {
public static void main (String[] args){
byte b=1;
short s=100;
int i=1000;
long l=10000;
char c='a';
float f=3.14f;
double d=3.14;
boolean t=true;
final double PI=3.14;
System.out.println("byte " +b);
System.out.println("short " +s);
System.out.println("int " +i);
i=010;
System.out.println("int " +i+ " octal mode");
i=0XFF;
System.out.println("int " +i+ " hexa mode");
System.out.println("long " +l);
System.out.println("char " +c);
System.out.println("float " +f);
System.out.println("double " +d);
System.out.println("boolean " +t);
System.out.println("PI " +PI);
}
}
Hasilnya setelah di compile :
2. Membuat program TesKeputusan.java
class TesKeputusan {
public static void main (String[] args){
char jeniskelamin= 'W';
//nested if
if (jeniskelamin=='L')
System.out.println("Cowok");
else if (jeniskelamin=='P')
System.out.println("Cewek");
else
System.out.println("Banci");
//ternary
System.out.println(jeniskelamin=='P'? "Dia pasti cowok." : "Dia pasti cewek");
//switch case
switch (jeniskelamin) {
case 'P' : System.out.println("Cowok");
break;
case 'L' : System.out.println("Cewek");
break;
default : System.out.println("Banci");
break;
}
}
}
Hasilnya setelah di compile :
3. Membuat program TesPerulangan.java
public class TesPerulangan {
public static void main (String[] args) {
int i;
//for
System.out.println("Perulangan For...");
for (i=0; i<10; i++)
System.out.println("Perulangan ke : "+i);
//while
System.out.println("Perulangan While...");
i=0;
while (i<10) {
System.out.println("Perulangan ke : "+i);
i++;
}
//do while
System.out.println("Perulangan Do While...");
i=0;
do {
System.out.println("Perulangan ke : "+i);
i++;
}
while (i<10);
}
}
Hasilnya setelah di compile :
