Java Syntax
It is very important to know about Java Syntax to learn Java programs. We must learn Java programs as long as we need to develop Android software. You can use other languages to develop Android software. We will now learn about Java Syntrax and how it works. Java Syntrax is discussed below: -
File Name Main.java
| package com.onlineashikhi; |
| public class Main { |
| public static void main(String[] args) { |
| // write your code here |
| System.out.println( "Hello World" ); |
| System.out.print( "Hello World" ); |
| } |
| } |
Output :-
Hello World
Hello World
Explained with examples
We printed it here ("Hello world"). Each Java file contains one class and each class will have a main method. When a program is run in Java, the Java program is run from the first main method.
A class named (Main) has been created in the above-mentioned program. The first letter should be a capital letter when creating a class. We need to keep in mind that Java is a case sensitive programming language. For example: - “myclass” and “MyClass” have completely different meanings.
main Method
| public static void main(String[] args) { } |
The program is run from the first Main Method in Java. However, some keywords have been used here before (main method). Let's take a look at these.
- public :- public is a keyword here. This means that anyone can use or access it.
- static :- Static is a keyword here. There is no need to create an object with this keyword. This keyword is related to the class.
- void :- This means that this method will not return any value.
- main :- This is the name of the method. The same arguments we get inside the method will be the same arguments we get when we run with parameters. This is called the Array of string. No problem if you don't understand it now, we will discuss it later. Remember that any class and method begins with "{" and ends with "}".
System.out.println()
This method is used to print something in Java. This (println ()) method is to be used in the main method. This method is used to print new lines.
System.out.print()
Note :- The semicolon has to be given after the end of each statement. And any class and method begins with "{" and ends with "}". In Java, this bracket is called Carly Bases "{}".
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