Java Learning Note note--4, The first Java program

1.Java program Development steps:

1.Use a text editor to write java code to a file with the extension Java.

2.Call the Compilation tool Javac.exe to compile the Java source file, and build the name of the extension class bytecode file ( intermediate Language ).

3.Call the Run tool Java.exe to interpret the compiled bytecode File.

2. Java program operating mechanism

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compile : Javac file name . file suffix name

run : Java class name

my summary: Java program composition:java source file , Byte-code File .

3. Structure ofJava source program

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Java Learning Note note--4, The first Java program