how to call parent class method in java

In Java, the constructor of its parent class must be called during the construction of the subclass, because when there is an inheritance relationship, the subclass inherits the contents of the parent class, and by what means does it do so?The

JNI/NDK Development Guide (8) -- call constructor and parent class instance method, jnindk Reprinted please indicate the source: http://blog.csdn.net/xyang81/article/details/44002089 In Chapter 6th, we learned how to call Java static methods and

Package com.hanwei.service; Class testparent{public testparent () { System.out.println ("I am a parameterless constructor for the parent class"); } Public Testparent (String a) { System.out.println

1. After a subclass creates an instance, the class initialization method calls the initialization method of the parent class (except for Java. lang. object Class, Because Java. lang. object class does not have a parent class), and this call will be

The ClassLoader (class loader) is a very important concept in java™. The ClassLoader is responsible for loading the Java class's byte code into the Java virtual machine. In this paper, the basic concepts of Java ClassLoader are introduced in detail,

Learn more about parent class references pointing to child classes, and learn more about references pointing The parent class application points to a subclass object and refers: The parent class Animal, subclass Cat, Dog. Here, Animal can be an

Example:public class Parentchildtest {public static void Main (string[] args) {Parent parent=new parent ();Parent.printvalue ();Child child=new Child ();Child.printvalue ();Parent=child;Parent.printvalue ();parent.myvalue++;Parent.printvalue

"Error:implicit Super constructor Pet () is undefined. Must explicitly invoke another constructor "　Remember one point: when you construct a subclass, you are bound to call the constructor of the parent class. Because the elements in the parent

Launcher Startup Class This article is the source analysis part of the parent delegation mechanism, and the parent delegation model in the class loading mechanism is very important for the stable operation of the JVM. But the source is actually

Launcher Startup ClassThis article is the source analysis part of the parent delegation mechanism, and the parent delegation model in the class loading mechanism is very important for the stable operation of the JVM.But the source is actually