点击运行
import java.util.ArrayList; public class JiyikTest { public static void main(String[] args) { // getClass() with Object Object obj1 = new Object(); System.out.println("obj1 的类为: " + obj1.getClass()); // getClass() with String String obj2 = new String(); System.out.println("obj2 的类为: " + obj2.getClass()); // getClass() with ArrayList ArrayList<Integer> obj3 = new ArrayList<>(); System.out.println("obj3 的类为: " + obj3.getClass()); } }
运行结果 :
正在执行...
