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GenericMethods.java

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public class GenericMethods {

public static void main(String[] args) {

Pair<String, Integer> p1 = new Pair<>("Hello", 22);

Pair<String, Integer> p2 = new Pair<>("Hello2", 11);

// method 1 to call compare()

System.out.println(GenericMethods.compare(p1, p2)); // false

// method 2 to call compare()

// boolean same = GenericMethods.<String, Integer>compare(p1, p2);

* his feature, known as type inference, allows you to invoke a generic method as an ordinary method,

* without specifying a type between angle brackets.

* This topic is further discussed in the following section, Type Inference.*/

boolean same = GenericMethods.compare(p1, p2); // simplified syntax

System.out.println(same);

p1.setKey("Hello2");

p2.setValue(22);

System.out.println(compare(p1, p2)); // true

}

// create a generic method

public static<K, V> boolean compare(Pair<K, V>p1, Pair<K, V>p2){

return (p1.getKey().equals(p2.getKey()) &&

p1.getValue().equals(p2.getValue())

);

}

public static class Pair<K, V>{

private K key;

private V value;

public Pair(K key, V value) {

this.key = key;

this.value = value;

}

public void setKey(K key) {

this.key = key;

}

public void setValue(V value) {

this.value = value;

}

public K getKey() {

return key;

}

public V getValue() {

return value;

}