how to access private variables from another class in java

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Java Tour (iv)-object oriented thinking, member/local variables, anonymous objects, encapsulation, private, construction methods, building blocks of code

publicclass HelloJJAVA { // 公共的 静态 无返回值 main方法 数组 publicstaticvoidmain(String[] str) { new Person(); 20; p.speak(); }}class Person { int age; // 说话方法 void speak() { System.out.println("我今年""岁"); }} Our current code is written in this way, and the result of the output Here we have direct access to ARG, where there is a security risk, he

In the subclass, must I access the method with parameters of the parent class ?, A subclass accesses a private member of the parent class.

In the subclass, must I access the method with parameters of the parent class ?, A subclass accesses a private member of the parent class. Abstract class Person {private int age; private

Methods and ideas of JavaScript simulation class mechanism and private variables

anonymous function, the anonymous function is the constructor of the custom Class created through the new Class. The other is arguments, which refers to the parameters of anonymous functions, that is, param in new MyClass (param) above.The conversion of this is a little dizzy. Is there a simpler way? See the following code:Copy codeThe Code is as follows:Function Class

Private class member variables

Class member variables are privatized and accessed through read/write functions. This provides a consistent way (function) to access class member variables, while also providing a cheaper price for future changes. See the following Code : 1

Java notes Java tutorial translation preface Java introduction Java Native type Java operators summary Java class Java object Java this use Java class members access control Java method return value Java

Java tutorial translation Sequence Java Introduction Build a JSE development environment-install JDK and eclipse Language basics Java Hello World Program Analysis Variable Java Variables Java Native type Conversion of

C ++ class access control public/private/protected

saying: 1) A ClassYouyuanYou can access anyMember(Including member variables and member methods, the same below ).2) PrivateMemberOnly this class can be accessed, protectedMemberOnly the class and its derived class can be accessed, publicMemberAll users can

Explanation of public, private, and protected access permissions in Java, C ++

In Java: The access permissions in Java include public, private, protected, and default package access permissions. If the attribute methods in the class do not show the specified access

Whether an external class can access an inner class private element

According to the experiment I found that the external class is accessible Class parcel4{Private class Pcontents implements contents{private int i = 11;public int value () {return i;}}Public Contents Contents () {return new pcontents ();}public void Show () {pcontents s =n

Discussion on "turn" C + + class access control public/private/protected

, all methods of the parent class become private in subclasses;With protected inheritance, the protected and public methods of the parent class change to Protected,private method in the subclass;Using public inheritance, the method attribute in the parent class does not chan

Interview questions: Java instance variables, local variables, class variables

First, instance variablesAlso called an object variable, a class member variable, the storage space is allocated when the object is generated from the class, and the instance variables between the objects do not interfere with each other, and the instance variables can be accessed through the object's reference. Howeve

Ios obtains and modifies class private attributes and instance variables, and ios instances

Ios obtains and modifies class private attributes and instance variables, and ios instances1 # import "Cat. h "2 3 @ interface Cat () 4 5 @ property (nonatomic, copy) NSString * name; 6 7 @ end 8 9 @ implementation Cat {10 int age; 11} 12 13-(instancetype) initWithName :( NSString *) string {14 self = [super init]; 15 if (self) {16 _ name = string; 17 age = 1; 18

Java class variables and member variables initialization process, java Variables

Java class variables and member variables initialization process, java Variables I. class initialization Class initialization:

Java Reflection _ A simple example of changing the variables and methods in private _java

: Method Method=clazz.getmethod ("GetName", New Class[]{string.class}); Method.invoke (test,new object[]{"Harry"}); Then you can print out the King five. How do you change the value of name as private? 1. Get field First, Field Field=clazz.getdeclaredfield ("name"); 2. Set the accessible flag of this object to the indicated Boolean value. A value of TRUE indicates that the ref

How Java accesses private variables

") permission when it is called. Why do you want to access private variables? Because sometimes it is necessary to access the private variables when serializing. Access to

Control of the access rights of class members in C + + public inheritance, protection inheritance, and private inheritance __c++

Zz:http://blog.sina.com.cn/s/blog_b35e31b90101b6y7.html To prevent the connection from being invalidated, turn it back directly. Many students still have access to the right is not very clear, or more vague, some students remember and forget, forget and remember, so today I want to borrow this article to do some summary, and then provide a relatively simple way to remember the access rights in C + +.As we

JNI/NDK Development Guide (vii)--c/c++ access to Java instance variables and static variables

Reprint Please specify source: http://blog.csdn.net/xyang81/article/details/42836783In the previous chapter we learned how to access static and instance methods in any Java class in the local code, and in this chapter we will learn about instance variables and static variables

Analyze the public, protected, private, and default access permissions of java from the perspective of instances, publicprotected

Analyze the public, protected, private, and default access permissions of java from the perspective of instances, publicprotected 1. public   Same package 1. Internal Public class A {public int f = 1; public void m1 () {} public void m2 () {f = 2; // class internal normal

Private and protection in C + + programming and common class member access control _c language

PrivateGrammar Private: [member-list] private Base-class NoteWhen you are in the class member list, the Private keyword specifies that these members are accessible only from member functions and friends of that class

Java memory comprehension & amp; Reflection access to private attributes or methods, java memory

Java memory comprehension Reflection access to private attributes or methods, java memory After understanding the memory, you can understand everything and various languages. All languages are like this: the memory allocated by local variables is always in the stack, the m

Java Tour (ix)--object class, Equals,tostring,getclass, inner class access rule, static inner class, Inner class principle, anonymous inner class

Java Tour (ix)--object class, Equals,tostring,getclass, inner class access rule, static inner class, Inner class principle, anonymous inner class Every day by some trivial hara

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