Best answer: What is the use of import Java Net *?

What is the use of import Java?

The import keyword is used to import a package, class or interface.

What is * in import Java?

The import statement in Java allows to refer to classes which are declared in other packages to be accessed without referring to the full package name. You do not need any import statement if you are willing to always refer to java. util. List by its full name, and so on for all other classes.

What is the use of Java Net package?

Java.net is a package that provides a set of classes as well as interfaces for networking in Java. Some of the classes are URL class, URLConnection class, Socket class, ServerSocket class, DatagramSocket, MulticastSocket etc.

Why do we need classpath in Java?

The CLASSPATH defines the path, to find third-party and user-defined classes that are not extensions or part of Java platform. … class files and JAR files when setting the CLASSPATH. You need to set the CLASSPATH if: You need to load a class that is not present in the current directory or any sub-directories.

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What is Java util * in Java?

Java util ( java. util. * ) package contains collection framework . Java collections framework contains collection classes , classes related to date and time , event model , internationalization , and miscellaneous utility classes . … util ) package , you can do access all these classes and methods .

What is in Java Util?

util Description. Contains the collections framework, legacy collection classes, event model, date and time facilities, internationalization, and miscellaneous utility classes (a string tokenizer, a random-number generator, and a bit array).

How do you import a list in Java?

For example, to add elements to the ArrayList , use the add() method:

  1. import java. util. …
  2. public class Main { public static void main(String[] args) { ArrayList<String> cars = new ArrayList<String>(); cars. add(“Volvo”); cars. …
  3. Create an ArrayList to store numbers (add elements of type Integer ): import java. util.

Which is not a Java feature?

2) Which of the following is not a Java features? Explanation: The Java language does not support pointers; some of the major reasons are listed below: One of the major factors of not using pointers in Java is security concerns. Due to pointers, most of the users consider C-language very confusing and complex.

What is a ServerSocket in Java?

ServerSocket is a java.net class that provides a system-independent implementation of the server side of a client/server socket connection. … The accept method waits until a client starts up and requests a connection on the host and port of this server.

Does package is used for networking?

The java.net package provides many classes to deal with networking applications in Java.

Can we have 2 main methods in Java?

A class can define multiple methods with the name main. The signature of these methods does not match the signature of the main method. These other methods with different signatures are not considered the “main” method. Yes it is possible to have two main() in the same program.

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Can Java run without main method?

Yes, we can execute a java program without a main method by using a static block. Static block in Java is a group of statements that gets executed only once when the class is loaded into the memory by Java ClassLoader, It is also known as a static initialization block.

What JVM means?

Java Virtual Machine, or JVM, loads, verifies and executes Java bytecode. It is known as the interpreter or the core of Java programming language because it executes Java programming.