Hello World Program
Description
HelloWorld is usually the first program people write to learn a new programming language such as Java.The purpose of the program is to demonstrate the basic syntax of Java and how to use an IDE to write, compile, and run the program.
The program simply prints a few messages on the computer's output device: monitor.
The program file, HelloWorld.java, is called source code.
After compiling the source code successfully, the byte-code file HelloWorld.class is generated, it is the executable file.
Associated Concepts:
IDE
Programming process: write, compile, and run
Output device, System.out.println(), and System.out.print() methods
Escape sequences
Programming process: write, compile, and run
Output device, System.out.println(), and System.out.print() methods
Escape sequences
Algorithm:
Use System.out.println() method to print a message followed
by a new line character
Use escape sequence "\n" to add a new line
Use System.out.print() method to print a message without a new line character afterwards
Use escape sequence "\n" to add a new line
Use System.out.print() method to print a message without a new line character afterwards
Source Code
Sample Run
