What is the syntax for using generic classes in java

类名<具体的数据类型> 对象名=new 类名<具体的数据类型>();

public class ManTest { public static void main(String[] args) { //在创建对象时就要给泛型标识指定具体的数据类型，这里我指定了String Gneeric gneeric=new Gneeric<>("adawddwadwa"); String key1 = gneeric.getKey(); System.out.println("Key1="+key1);//Key1=adawddwadwa Gneeric gneeric1=new Gneeric<>(123); int key2=gneeric1.getKey(); System.out.println ("key2="+key2);//key2=123 //泛型类在创建对象的时候是没有指定数据类型,将按照object类型操作 Gneeric gneeric2=new Gneeric<>("awewaea"); Gneeric gneeric3=new Gneeric<>(12121); Object key4 =gneeric3.getKey(); } }