generic class declaration java code example
Example 1: generic class java
public interface Pair<K, V> {
public K getKey();
public V getValue();
}
public class OrderedPair<K, V> implements Pair<K, V> {
private K key;
private V value;
public OrderedPair(K key, V value) {
this.key = key;
this.value = value;
}
public K getKey() { return key; }
public V getValue() { return value; }
}
Example 2: java define a generic class that produces
List<String> list1 = new ArrayList<String>();
list1.add("abc");
for(String str : list1){
}