Java Starts from scratch

1. JDK Download and installation
Jdk--java SE Department Kit Java Environment Pack

Jre--java Runtime Department Java Runtime Environment
Path configuration: Find the path to the Javac.exe file, Javac.exe used to compile the source file such as: C:\jdk1.8.0_25\bin; paths separated by semicolons
Class PATHP configuration: Looking for a. class file path such as: F:\java\.; Indicates the search for a class file under the current path
2. Java applation
Java source files with. Java as the file name extension, the basic component of the source file is the class, and a source file has a maximum of one public class
The basic format is
public class helloworld{

Public ststic void Main (string[] args) {
Method body
}
}

Java Starts from scratch