super Keyword

title: super Keyword in Java description: super keyword ke uses aur examples

super parent class ke members ko access karta hai.

3 Uses

1. Parent Constructor Call

java exampleWoHoTech

class Animal {
    String name;
    Animal(String name) { this.name = name; }
}

class Dog extends Animal {
    String breed;

    Dog(String name, String breed) {
        super(name);        // Parent constructor call
        this.breed = breed;
    }
}

2. Parent Method Call

java exampleWoHoTech

class Parent {
    void display() { System.out.println("Parent display"); }
}

class Child extends Parent {
    @Override
    void display() {
        super.display();   // Parent method call
        System.out.println("Child display");
    }
}
// Output:
// Parent display
// Child display

3. Parent Field Access

java exampleWoHoTech

class Parent {
    int x = 10;
}

class Child extends Parent {
    int x = 20;

    void show() {
        System.out.println("Child x: " + x);        // 20
        System.out.println("Parent x: " + super.x); // 10
    }
}

this() vs super()

this() — Same class ka constructor call
super() — Parent class ka constructor call
Dono sirf constructor mein, pehli line par use hote hain

Important Notes

super() implicitly call hota hai agar explicitly na likho
static context mein super use nahi hota

title: super Keyword in Java description: super keyword ke uses aur examples

super parent class ke members ko access karta hai.

3 Uses

1. Parent Constructor Call

java exampleWoHoTech

class Animal {
    String name;
    Animal(String name) { this.name = name; }
}

class Dog extends Animal {
    String breed;

    Dog(String name, String breed) {
        super(name);        // Parent constructor call
        this.breed = breed;
    }
}

2. Parent Method Call

java exampleWoHoTech

class Parent {
    void display() { System.out.println("Parent display"); }
}

class Child extends Parent {
    @Override
    void display() {
        super.display();   // Parent method call
        System.out.println("Child display");
    }
}
// Output:
// Parent display
// Child display

3. Parent Field Access

java exampleWoHoTech

class Parent {
    int x = 10;
}

class Child extends Parent {
    int x = 20;

    void show() {
        System.out.println("Child x: " + x);        // 20
        System.out.println("Parent x: " + super.x); // 10
    }
}

this() vs super()

this() — Same class ka constructor call
super() — Parent class ka constructor call
Dono sirf constructor mein, pehli line par use hote hain

Important Notes

super() implicitly call hota hai agar explicitly na likho
static context mein super use nahi hota

super Keyword

3 Uses

1. Parent Constructor Call

2. Parent Method Call

3. Parent Field Access

this() vs super()

Important Notes

Continue learning this concept

super Keyword

3 Uses

1. Parent Constructor Call

2. Parent Method Call

3. Parent Field Access

this() vs super()

Important Notes

Continue learning this concept