Can we override toString method in Java?
Override the toString() method in a Java Class
A string representation of an object can be obtained using the toString() method in Java. This method is overridden so that the object values can be returned.
What would happen if you will not override the toString () method?
You will not get what the object actually has in it. There will be no information about state or properties of an object. Therefore, it is recommended that every class you write must override toString() method so that you quickly get an overview of an object.
How do you use the toString method?
The toString method is used to return a string representation of an object. If any object is printed, the toString() method is internally invoked by the java compiler. Else, the user implemented or overridden toString() method is called.
How do you override in Java?
Rules for Method Overriding
- The argument list should be exactly the same as that of the overridden method.
- The return type should be the same or a subtype of the return type declared in the original overridden method in the superclass.
Why toString method is used in Java?
The java toString() method is used when we need a string representation of an object. It is defined in Object class. This method can be overridden to customize the String representation of the Object. Below is a program showing the use of the Object’s Default toString java method.
What is string toString in Java?
If you want to represent any object as a string, toString() method comes into existence. 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.
Why should you override toString method?
Purpose of Overriding toString() Method in Java
When you print an object, by default the Java compiler invokes the toString() method on the object. So by overriding the toString() method, we can provide meaningful output.
Why do we override toString method in pojo?
From my experience I prefer to add a toString() method in all POJO classes because it helps if you want to print the current state of an instance, using a logging framework or not. … Usually, you want to read the value of your class attributes. For that, you need to override toString() .
Why we do override toString ()?
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.
What is toString () method?
A toString() is an in-built method in Java that returns the value given to it in string format. Hence, any object that this method is applied on, will then be returned as a string object.
Is toString an accessor method?
An accessor method allows other objects to obtain the value of instance variables or static variables. A non-void method returns a single value. … The toString method is an overridden method that is included in classes to provide a description of a specific object.
What is hashCode method in Java?
Java Object hashCode() is a native method and returns the integer hash code value of the object. … An object hash code value can change in multiple executions of the same application. If two objects are equal according to equals() method, then their hash code must be same.
Can we override constructor?
Constructor Overriding is never possible in Java. This is because, Constructor looks like a method but name should be as class name and no return value. Overriding means what we have declared in Super class, that exactly we have to declare in Sub class it is called Overriding.
Can we override static method?
Static methods cannot be overridden because they are not dispatched on the object instance at runtime. The compiler decides which method gets called. Static methods can be overloaded (meaning that you can have the same method name for several methods as long as they have different parameter types).