Java Learning II: Javac Java Learning (original)

After installing the JDK, you can compile and execute a simple Java program,

One, Javac, Java

Relationship of path name and package name:

Under D, build the folder test, create the file Java1.java in test (the class name should be the same as the file name)

Java1.java:

Package Test;

public class JAVA1

{

public static void Main (string[] args)

{

System.out.println ("Hello World");

　　}

}

Commands to use:

D:\Test\javac Java1.java---> Get java1.class

Because the Java1.java inside uses the package test, this time if does not change the path, must under the test new folder test,

Use command D:\Test\java JAVA1-No,

D:\Test\java TEST.JAVA1-I can't find the file

Use the command D:\Test\javac. Java1.java----Get the folder corresponding to the package

Use the command D:\Test\java TEST.JAVA1 or D:\Test\java test\java1 to get the correct results

After obtaining the corresponding folder, using D:\Test\Test\java Java1 is also incorrect,

Second, the general class and the main class difference.

Java Learning II: Javac Java Learning (original)