Flex IT Trainee Interview Questions, Process, and Tips

Method overloading in Java allows multiple methods with the same name but different parameters.

• Method overloading is achieved by changing the number or type of parameters in the method signature.

• Return type alone is not sufficient to overload a method.

• Example: void print(int num) and void print(String str) are overloaded methods.

Method overriding in Java allows a subclass to provide a specific implementation of a method that is already provided by its superclass.

• In method overriding, the method in the subclass has the same name, return type, and parameters as the method in the superclass.

• The overridden method must be at least as accessible as the method in the superclass.

• The @Override annotation can be used to ensure that a method is actually ...read more

The static keyword in Java is used to create class-level variables and methods that can be accessed without creating an instance of the class.

• Static variables are shared among all instances of a class.

• Static methods can be called without creating an object of the class.

• Static blocks are used to initialize static variables.

• Static keyword can also be used to create static nested classes.

Inheritance in Java allows a class to inherit properties and behavior from another class.

• Inheritance is achieved using the 'extends' keyword in Java.

• Subclasses can access the methods and fields of their superclass.

• Java does not support multiple inheritance, but a class can implement multiple interfaces.