java_泛型(构造器)部分实例

时间:2023-03-08 17:58:35
package ming;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List; class MyClass<E>{
public <T> MyClass(T t){
System.out.println("t value is "+t);
}
} public class GenericMethodTest { public static void main(String[] args) { //MyClass中声明 E 是String
//泛型构造器中声明 T是 Integer
//输出结果为5
MyClass<String> myclass = new MyClass<String>(5);
//显式指代构造器中T是Integer
MyClass<String> myclass2 = new <Integer>MyClass<String>(5);
} }