Tudip Technologies Java Developer Interview Questions, Process, and Tips

The purpose of a default constructor is to initialize the object's instance variables with default values.

• A default constructor is automatically provided by the compiler if no constructor is defined in the class.

• It is used to create an object of the class with default values for its instance variables.

• Default constructors are useful when we want to create an object without passing any initial values.

Constructors are special methods used to initialize objects, while methods are regular functions that perform specific tasks.

• Constructors have the same name as the class, while methods have unique names.

• Constructors are called automatically when an object is created, while methods need to be called explicitly.

• Constructors do not have a return type, while methods have a return type.

• Constructors are used to set initial v...read more

The main method is static because it needs to be called by the Java Virtual Machine (JVM) without creating an instance of the class.

• Static methods can be called directly using the class name, without creating an object of the class.

• The main method is the entry point of a Java program, and it needs to be called by the JVM to start the execution.

• If the main method were not static, we would need to create an object of the...read more