Java 5.0 泛型之 Java泛型的嵌套设置

package Demo;
// Java泛型的嵌套设置
class Info31<T, V> { // 接收两个泛型类型
private T key;
private V value;
public Info31(T key, V value) {
this.setKey(key);
this.setValue(value);
}
public void setKey(T key) {
this.key = key;
}
public void setValue(V value) {
this.value = value;
}
public T getKey() {
return this.key;
}
public V getValue() {
return this.value;
}
}
class Demo31<S> {
private S info;
public Demo31(S info) {
this.setInfo(info);
}
public void setInfo(S info) {
this.info = info;
}
public S getInfo() {
return this.info;
}
}
public class GenericsDemo31 {
public static void main(String args[]) {
Demo31<Info31<Integer, String>> d = null; // 将Info作为Demo的泛型类型
Info31<Integer, String> i = null; // Info指定两个泛型类型
i = new Info31<Integer, String>(99, "it"); // 实例化Info对象
d = new Demo31<Info31<Integer, String>>(i); // 在Demo类中设置Info类的对象
System.out.println(" Key Of Integer : " + d.getInfo().getKey());
System.out.println(" Value Of String : " + d.getInfo().getValue());
}
}