how to make an objec tjava
class Puppy() {
String name;
int age;
Puppy(String puppy_name, int puppy_age) {
name = puppy_name;
age = puppy_age;
}
public static void main(String[] args) {
Puppy rex = new Puppy("rex",4);
}
}class in java
Class is a blueprint or template which
you can create as many objects as you
like. Object is a member or instance
of a class.
Class is declared using class keyword,
Object is created through
new keyword mainly. A class is a template
for objects. A class defines
object properties including a valid range
of values, and a default value.
A class also describes object behavior.java classes and objects
class Dog {
int age = 5;
public static void main(String[]args) {
Dog myObj = new Dog();
System.out.println(myObj.age);
}
}using class in java
public class HelloWorld {
public static void main(String[] args) {
class Number{
int number;
public boolean isPos(){
if(number > 0){
return true;
} else {
return false;
}
}
}
Number myNumber = new Number();
myNumber.number = 7;
if(myNumber.isPos()){
System.out.println(myNumber.number + " is positive!!!");
} else {
System.out.println(myNumber.number + " is not positive!!!");
}
}
}java classes
public class Bicycle {
// the Bicycle class has
// three fields
public int cadence;
public int gear;
public int speed;
// the Bicycle class has
// one constructor
public Bicycle(int startCadence, int startSpeed, int startGear) {
gear = startGear;
cadence = startCadence;
speed = startSpeed;
}
// the Bicycle class has
// four methods
public void setCadence(int newValue) {
cadence = newValue;
}
public void setGear(int newValue) {
gear = newValue;
}
public void applyBrake(int decrement) {
speed -= decrement;
}
public void speedUp(int increment) {
speed += increment;
}
}how to make a class in java
public class Main {
public static void main (String[] args) {
System.out.println("Hello World");
}
}Copyright © 2021 Codeinu
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