Generics Interface in java

/*In similar way, we can create generic interfaces in java. We can also have multiple type parameters as in Map interface. Again we can provide parameterized value to a parameterized type also, for example new HashMap<String, List<String>>(); is valid.*/
package java.lang;
import java.util.*;

public interface Comparable<T> {
    public int compareTo(T o);
}

Source: journaldev.com

Generics Interface in java

/*Suppose we want to restrict the type of objects that can be used in the parameterized type, for example in a method that compares two objects and we want to make sure that the accepted objects are Comparables. To declare a bounded type parameter, list the type parameter’s name, followed by the extends keyword, followed by its upper bound, similar like below method.

The invocation of these methods is similar to unbounded method except that if we will try to use any class that is not Comparable, it will throw compile-time error.

Bounded type parameters can be used with methods as well as classes and interfaces.

Java Generics supports multiple bounds also, i.e <T extends A & B & C>. In this case, A can be an interface or class. If A is class then B and C should be an interface. We can’t have more than one class in multiple bounds.*/
public static <T extends Comparable<T>> int compare(T t1, T t2){
		return t1.compareTo(t2);
	}

Source: journaldev.com

Similar codes

0 vote351 views1 answer
How to send images to storage using Admin Sdk in java
Java
5 votes354 views1 answer
Java int to roman
Java
-2 votes337 views6 answers
Spring enable cors
Java
107 votes396 views6 answers
Switch statement java
Java
61 votes377 views6 answers
Js loop array
Java
0 vote347 views1 answer
How to count an replace string in java
Java
0 vote313 views1 answer
How to make an activity default in android studio
Java
0 vote354 views1 answer
Java how to know if there is something on arguments
Java
0 vote334 views1 answer
Destory fragment
Java
0 vote343 views2 answers
How to make it another player's turn java
Java