What is the importance of a no-argument constructor in Java
What is the importance of a no-argument constructor in Java?
A no-argument constructor in Java is crucial for several reasons. It allows the creation of an object without passing any arguments, providing default values to object properties. This simplifies object instantiation, especially when dealing with large classes.
Moreover, it’s essential for JavaBeans convention compliance which requires a public no-arg constructor for encapsulation and easy manipulation of class properties.
In serialization, JVM uses the no-arg constructor to create a new instance during deserialization, hence its necessity. If not explicitly defined, Java provides a default one. However, if other constructors are present, you must manually define it.
