获取字节码文件的三种方式

public class Demo_Reflect {

    public static void main(String[] args) throws ClassNotFoundException {
        Class class1 = Class.forName("reflect.demo.Test");
        Class class2 = Test.class;
    
        Test t = new Test();
        Class class3 = t.getClass();
    
        System.out.println(class1 == class2 && class2 == class3);
    }

}