CODEWITHSUNDEEP
javagenericsinheritancecompiler-errors
Teekan
Teekan

Reputation: 13

Java Generic inheritance

I am trying to implement some code that starts with a parent who has a generic variable, and then the child inherits it. 

public class Parent <A>{
private A a;

public Parent (A a){
    this.a=a;
    }
} 

public class Child <A> extends Parent<A>{

private A a;

public Child (A a){
    this.a=a;
    }
}

I'm getting a compile error stating

constructor Parent in class Parent<A> cannot be applied to given types; A

Upvotes: 1

Views: 52

Answers (1)

Mureinik
Mureinik

Reputation: 311393

You need to explicitly invoke the parent's constructor from the child's constructor:

public class Child <A> extends Parent<A> {
    public Child (A a) {
        super(a);
    }
}

Upvotes: 3

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