object java code example
Example 1: 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();
}
}
Example 2: java class
// Example : TestClass (Can be predefined or user-defined)
public class TestClass {
// properties
private int id = 111;
// constructor
public TestClass(){
super();
}
// method
public void test(){
// some code here
}
}
Example 3: javadoc reference general toString
/**
* This javadoc text will reference Object's
* {@link java.lang.Class#toString()} method.
*/
// Output in Javadoc:
// This javadoc text will reference Object's Class.toString() method.
Example 4: 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;
Example 5: this obj java meaning
public class Point {
public int x = 0;
public int y = 0;
//constructor
public Point(int a, int b) {
x = a;
y = b;
}
}