[PDF] classes objects and methods in java

What are the methods of an object in Java?

There are four ways to create objects in java. Strictly speaking there is only one way (by using new keyword), and the rest internally use new keyword. Using new keyword: It is the most common and general way to create an object in java. Example:

How do you create an object in Java?

In Java, an object is created from a class. We have already created the class named Main, so now we can use this to create objects. To create an object of Main, specify the class name, followed by the object name, and use the keyword new: You can also create an object of a class and access it in another class.

What is the toString method in Java?

The toString () method returns the String representation of the object. If you print any object, Java compiler internally invokes the toString () method on the object. So overriding the toString () method, returns the desired output, it can be the state of an object etc. depending on your implementation.

What is the Class object in Java?

The Object class is the parent class of all the classes in java by default. In other words, it is the topmost class of java. The Object class is beneficial if you want to refer any object whose type you don't know. Notice that parent class reference variable can refer the child class object, know as upcasting.