java create new object
Car mycar = new Car();java class
public class Lightsaber {
// properties
private boolean isOn;
private Color color;
// constructor
public Lightsaber(Color color) {
this.isOn = false;
this.color = color;
}
// getters
public Color getColor() {
return color;
}
public boolean getOnStatus() {
return isOn;
}
// setters
public void turnOn() {
isOn = true;
}
public void turnOff() {
isOn = false;
}
}
// Implementation in main method:
public class test {
public static void main(String[] args) {
Lightsaber yoda = new Lightsaber(green);
yoda.turnOn();
}
}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);
}
}make an object in java
public class Puppy {
public Puppy(String name) {
// This constructor has one parameter, name.
System.out.println("Passed Name is :" + name );
}
public static void main(String []args) {
// Following statement would create an object myPuppy
Puppy myPuppy = new Puppy( "tommy" );
}
}using class in java
public class HelloWorld {
public static void main(String[] args) {
// how to use class in java
class User{
int score;
}
User dave = new User();
dave.score = 20;
System.out.println(dave.score);
}
}object in java
Objects: came from class, we can create multiple objects from a class
ArrayList<> list = new ArrayList<>();
Class refName OBJECT
each object has its own copy of instance variable
· declared outside the blocks or methods
Object: Instance of the class. We can store different data's to objects
Object Creation: with new keyword.
ClassName obj = new ExistingConstructor;Copyright © 2021 Codeinu
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