Table of Contents
- 1 Can a class name be a variable type?
- 2 Can method name be same as class name in Java?
- 3 Which variable can be accessed using class name?
- 4 Can a class be used as a type?
- 5 How would you name a class and a method?
- 6 Can we use String as variable name in Java?
- 7 Can static variables be accessed by class name?
- 8 Can we access static variable with a class name?
- 9 Can we use predefined class name as class name in Java?
- 10 How do you declare a static variable in Java 8?
Can a class name be a variable type?
Java is an object-oriented language. The name of a class can be used as a type, so you can declare an object-type variable or specify that a method returns an object. If you declare a variable using the name of a class for its type, that variable can contain a reference to an object of that class.
Can method name be same as class name in Java?
We can have a method name same as a class name in Java but it is not a good practice to do so. In the below example, a default constructor is called when an object is created and a method with the same name is called using obj. …
How do you mention a class name in Java?
How do I write class names in Java?
- You shouldn’t use predefined or existing class names as the name of the current class.
- You shouldn’t use any Java keywords as class name (with the same case).
- The First letter of the class name should be capital and remaining letters should be small (mixed case).
Which variable can be accessed using class name?
Static Variables
We can access instance variables through object references, and Static Variables can be accessed directly using the class name.
Can a class be used as a type?
A type variable can be any non-primitive type you specify: any class type, any interface type, any array type, or even another type variable. This same technique can be applied to create generic interfaces.
Can object name be same as class name?
Yes, It is allowed to define a method with the same name as that of a class.
How would you name a class and a method?
Classes should be named with an uppercase letter, and be concise, for example Customer or Product. Method names begin with a lowercase letter, with subsequent words in uppercase. They are actions and should be verbs.
Can we use String as variable name in Java?
Simply a variable of type String called name, i.e. in Java: String name = “The name of something”; System.
What are the rules for naming variables in Java?
The rules and conventions for naming your variables can be summarized as follows:
- Variable names are case-sensitive.
- Subsequent characters may be letters, digits, dollar signs, or underscore characters.
- If the name you choose consists of only one word, spell that word in all lowercase letters.
Can static variables be accessed by class name?
Yes, all static class-level members are accessible throughout the class’s code ( final or otherwise), and they don’t need to be prefixed with the class name.
Can we access static variable with a class name?
Any instance of the class can access the static variable as it is shared among all instances of the class. Since static variables are not accessed via an instance reference, you use the class name with a dot to access the variable. The example uses a static variable to count how many instances of MyClass are created.
Can static variables be called using ClassName variablename in Java?
Can static variables be called using className.variableName in Java? Class variables also known as static variables are declared with the static keyword There would only be one copy of each class variable per class, regardless of how many objects are created from it.
Can we use predefined class name as class name in Java?
Using predefined class name as Class or Variable name in Java. In Java, Using predefined class name as Class or Variable name is allowed. However, According to Java Specification Language(§3.9) the basic rule for naming in Java is that you cannot use a keyword as name of a class, name of a variable nor the name of a folder used for package.
How do you declare a static variable in Java 8?
Java 8 Object Oriented Programming Programming Class variables also known as static variables are declared with the static keyword There would only be one copy of each class variable per class, regardless of how many objects are created from it. You can access a class variable without instantiation using the class name as className.variableName.
How to access a class variable without instantiation in Java?
Class variables also known as static variables are declared with the static keyword There would only be one copy of each class variable per class, regardless of how many objects are created from it. You can access a class variable without instantiation using the class name as className.variableName.