java_类泛型基本实例

package ming;public class Apple2<T> {public T info;public Apple2(T info) {this.info = info;}public T getInfo() {return info;}public void setInfo(T info) {this.info = info;}public static void main(String[] args) {//T 实际类型是StringApple2<String> a1 = new Apple2<String>("苹果");System.out.println(a1.getInfo());Apple2<Double> a2 = new Apple2<Double>(1.23);System.out.println(a2.getInfo());}}