Java equivalent example (I think) of the PHP Generics RFC Example

Entry.java

public class Entry<KeyType, ValueType>
{
    protected KeyType key;
    protected ValueType value;

    public Entry(KeyType key, ValueType value) {
        key = key;
        value = value;
    }

    public KeyType getKey() {
        return key;
    }

    public ValueType getValue() {
        return value;
    }
}

Entry.php

<?php

class Entry<KeyType, ValueType>
{
    protected $key;
    protected $value;
 
    public function __construct(KeyType $key, ValueType $value)
    {
        $this->key   = $key;
        $this->value = $value;
    }
 
    public function getKey(): KeyType
    {
        return $this->key;
    }
 
    public function getValue(): ValueType
    {
        return $this->value;
    }
}