What are the different parts of a method?

Like a class, a method definition has two major parts: the method declaration and the method body. The method declaration defines all the method’s attributes, such as access level, return type, name, and arguments, as shown in the following figure. The method body is where all the action takes place.

What is the body of a method enclosed in?

Braces are used to group statements and declarations. The contents of a class or interface are enclosed in braces. Method bodies and constructor bodies are enclosed in braces. Braces are used to group the statements in an if statement, a loop, or other control structures.

How do you declare a method?

The only required elements of a method declaration are the method’s return type, name, a pair of parentheses, () , and a body between braces, {} . More generally, method declarations have six components, in order: Modifiers—such as public , private , and others you will learn about later.

When you write a method that must return a value which of the following must be inside the body of the method?

You declare a method’s return type in its method declaration. Within the body of the method, you use the return statement to return the value. Any method declared void doesn’t return a value. It does not need to contain a return statement, but it may do so.

What is method definition in Java?

A method is a block of code which only runs when it is called. You can pass data, known as parameters, into a method. Methods are used to perform certain actions, and they are also known as functions.

What type does the method contains return?

Syntax of contains() method

The return type is boolean which means this method returns true or false. When the character sequence found in the given string then this method returns true else it returns false. If the CharSequence is null then this method throws NullPointerException.

What is the process of defining a method in terms of itself that is a method that calls itself polymorphism abstraction encapsulation recursion?

Explanation: Recursion is the process of defining something in terms of itself. It allows us to define a method that calls itself.

What is meant by returning an object from a method?

Returning a Value from a Method

Java requires that a method declare the data type of the value that it returns. If a method does not return a value, it must be declared to return void . … When returning an object, the returned object’s data type must be either a subclass of or the exact class indicated.

Which method can be defined only once in a program a main method B finalize method c static method D private method?

Correct Option: D

main() method can be defined only once in a program. Program execution begins from the main() method by java runtime system.

What is the process of defining a method in a subclass?

2. What is the process of defining a method in a subclass having same name & type signature as a method in its superclass? … Explanation: To disallow a method from being overridden, specify final as a modifier at the start of its declaration. Methods declared as final cannot be overridden.

What is the process of defining more than one method in a class differentiated by method signature?

2. What is the process of defining more than one method in a class differentiated by method signature? Explanation: Function overloading is a process of defining more than one method in a class with same name differentiated by function signature i:e return type or parameters type and number.

What is the process of defining two or more methods?

What is the process of defining two or more methods within same class that have same name but different parameters declaration? Explanation: Two or more methods can have same name as long as their parameters declaration is different, the methods are said to be overloaded and process is called method overloading.

Why might you define a method as native Mcq?

Overcome the limitations of the private scope of a method. Get to access hardware that Java does not know about. Write optimized code for performance in a language such as C/C++.

What is the correct way of defining generic class?

Which of these is an correct way of defining generic class? Explanation: The type parameter section, delimited by angle brackets (<>), follows the class name. It specifies the type parameters (also called type variables) T1, T2, …, and Tn. 5.

How do you inherit class A class B?

Explanation: Class A & class B both contain display() method, class B inherits class A, when display() method is called by object of class B, display() method of class B is executed rather than that of Class A.

What parameters does the main method define?

Answer 6: The main method defines a single parameter, usually named args , whose type is an array of String objects.

What does float a 35 0 return mean?

10) What does the expression float a = 35 / 0 return? Explanation: In Java, whenever we divide any number (double, float, and long except integer) by zero, it results in infinity.

Which are native methods of Object class?

protected native Object clone() throws CloneNotSupportedException. public boolean equals(Object obj) protected void finalize() throws Throwable.

Which of the following keywords is used to begin the class definition for a class named name?

keyword class
The keyword class begins the class definition for a class named name .

What is the role of main method in a class?

In any Java program, the main() method is the starting point from where compiler starts program execution. So, the compiler needs to call the main() method. If the main() is allowed to be non-static, then while calling the main() method JVM has to instantiate its class.

Why is the main method static?

We create the main() method as static so that JVM can load the class into the main memory. … The JVM needs to instantiate the class if the main() method is allowed to be non-static. JVM can call the static methods easily without creating an instance of the class by using the class name only.

What does a class definition contain?

In object-oriented programming , a class is a template definition of the method s and variable s in a particular kind of object . Thus, an object is a specific instance of a class; it contains real values instead of variables. … The structure of a class and its subclasses is called the class hierarchy.