java - 为什么无法在构造方法是使用泛型？

Question

/**

• Created by Archer on 2016/3/29.
  */

public class GenericDemo02 {
    public static void main(String[] args) {

         Con<String> c= new Con<String>("Archer");

        System.out.println(c.getValue());
        System.out.println("hello");
    }
}


class Con<T>{
    private T value;

    public Con(T value) {
        this.value = value;
    }

    public T getValue() {
        return value;
    }

    public void setValue(T value) {
        this.value = value;
    }


}

编译器报错，jdk1.8

Exception in thread "main" java.lang.NoClassDefFoundError: Con
    at GenericDemo02.main(GenericDemo02.java:7)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:483)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
Caused by: java.lang.ClassNotFoundException: Con
    at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 6 more

Answer 1

당신의 Con 수업은 이렇게 작성되어 있나요? 두 가지 실수가 있습니다.
1. Con 앞에는 Class
가 없습니다. 2. Con 뒤에는 <T>

이 없습니다.

Answer 2

콘이어야 해{...}