What Does B Mean In Java?

What is the argument in Java?

Arguments in Java are the actual values that are passed to variables defined in the method header when the method is called from another method.

The passed argument values replace those parameters which have been used during method definition and the body of method is then executed with these values..

What is S in regular expression?

JavaScript RegExp \s Metacharacter The \s metacharacter is used to find a whitespace character. A whitespace character can be: A space character. … A carriage return character. A new line character.

What is Matcher in Java?

The Java Matcher class ( java. util. regex. Matcher ) is used to search through a text for multiple occurrences of a regular expression. You can also use a Matcher to search for the same regular expression in different texts.

What does the symbol mean in Java?

67. Loading when this answer was accepted… The @ symbol denotes a Java Annotation. What a Java annotation does, is that it adds a special attribute to the variable, method, class, interface, or other language elements.

What is difference between == and equals in Java?

equals() method for content comparison. In simple words, == checks if both objects point to the same memory location whereas . equals() evaluates to the comparison of values in the objects.

Which inheritance in Java programming is not supported?

multiple inheritanceWhen one class extends more than one classes then this is called multiple inheritance. For example: Class C extends class A and B then this type of inheritance is known as multiple inheritance. Java doesn’t allow multiple inheritance.

What is String [] args?

The String[] args parameter is an array of Strings passed as parameters when you are running your application through command line in the OS. … String[] args means an array of sequence of characters (Strings) that are passed to the “main” function. This happens when a program is executed.

What does \\ s+ mean in Java?

\s – matches single whitespace character. \s+ – matches sequence of one or more whitespace characters.

What is a regular expression in Java?

A regular expression is a special sequence of characters that helps you match or find other strings or sets of strings, using a specialized syntax held in a pattern. They can be used to search, edit, or manipulate text and data. The java.util.regex package primarily consists of the following three classes −

What does 3 dots mean in Java?

var argsThe three dots ( … ) are used in a function’s declaration as a parameter. These dots allow zero to multiple arguments to be passed when the function is called. The three dots are also known as var args .

Which of these is correct way of inheriting class A by Class B?

Discussion ForumQue.Which of these is correct way of inheriting class A by class B?b.class B inherits class A {}c.class B extends A {}d.class B extends class A {}Answer:class B extends A {}1 more row

Which Cannot be inherited from a base class in Java programming?

Q) Which cannot be inherited from a base class in Java programming. Constructor of a class cannot be inherited. But note that they can be invoked from a derived class. final method can be inherited just they cannot be overridden in sub class.

What is difference between == equals () and compareTo () method?

The 2 main differences are that: equals will take any Object as a parameter, but compareTo will only take Strings. equals only tells you whether they’re equal or not, but compareTo gives information on how the Strings compare lexicographically.

What does ‘%’ mean in Java?

Java has one important arithmetical operator you may not be familiar with, % , also known as the modulus or remainder operator. The % operator returns the remainder of two numbers. For instance 10 % 3 is 1 because 10 divided by 3 leaves a remainder of 1.

What is new B return?

By using A obj = new B(); a new object of class B is created and assigned to variable obj. … A super class reference variable can hold reference of sub-class object without casting.