JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Java Constructor Examples

  • Constructors are required to create objects for a class. Constructors are used to initialize the instance variables of an object.
  • Constructor declaration looks like method declaration. It must have the same name as that of the class and have no return type.
  • Constructors can be classified into two types, default constructors and parametarized constructors.
  • If you don't define a constructor, then the compiler creates a default constructor. Default constructors do not contain any parameters. Default constructors are created only if there are no constructors defined by us.
  • Prametarized constructors are required to pass parameters on creation of objects. We can overload constructors with different datatypes as its parameters.
  • Use 'this()' to communicate from one constructor to another constructor in the same class.
  • Use 'super()' to communicate with super class constructor.

Java Constructor Sample Code Examples

Knowledge Centre
What is race condition?
A race condition is a situation in which two or more threads or processes are reading or writing some shared data, and the final result depends on the timing of how the threads are scheduled. Race conditions can lead to unpredictable results and subtle program bugs. A thread can prevent this from happening by locking an object. When an object is locked by one thread and another thread tries to call a synchronized method on the same object, the second thread will block until the object is unlocked.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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