We can access a static property of a class by writing className.propertyName, but if the property (method/variable) is private then is it possible to access that property? For example, This will print A.a = 50 But if I change static int a = 50; to private static int a = 50; then can I access that variable any…
Tag: private
Getter, Setter & NullPointerException
Firstly, I am trying to assign the value for array I initialized locally. The class type of the array is stored inside another class and the variable is private so I am using getter and setter to set the value. But it showing “Exception in thread “main” java.lang.NullPointerException at room…
Can a object be private and public?
Can a reference to an object be private in class while other object can have a public reference to the same class(post script: new to java+ a simple example please). I read somewhere that this prob is regarding aliasing? Sorry my title may not make sense! Answer Objects aren’t private or public. Fields …
Shall we mark private methods as “static” as more as possible?
There are some private methods in a class, and they don’t depend on any instance variables. They accept some arguments, and return a value, no side effects. For example: You see there is a capWord method in this class, which is private but not static. It’s safe to mark it as static, but is there g…
What is the use of a private static variable in Java?
If a variable is declared as public static varName;, then I can access it from anywhere as ClassName.varName. I am also aware that static members are shared by all instances of a class and are not reallocated in each instance. Is declaring a variable as private static varName; any different from declaring a v…
Change private static final field using Java reflection
I have a class with a private static final field that, unfortunately, I need to change it at run-time. Using reflection I get this error: java.lang.IllegalAccessException: Can not set static final boolean field Is there any way to change the value? Answer Assuming no SecurityManager is preventing you from doi…
groovy call private method in Java super class
I have an abstract Java class MyAbstractClass with a private method. There is a concrete implementation MyConcreteClass. In my groovy test class I have I get an error that there is no such method signature for somePrivateMethod. I know groovy can call private methods but I’m guessing the problem is that…