How the Java file is converted into a class file; class how to convert to a jar file; How to convert a jar file into binary dex

Command
1.java file converted to class file: Javac-source 1.6-target 1.6 X.java (X.java is the file to be converted, the default is to generate a class file of the same name)
Such as:

D:\java\studio\sdk\build-tools\22.0.1>javac-source 1.6-target 1.6 com/chaos/ha
Ck/AntiLazyLoad.java

2.class file converted to jar file: Jar CVF X.jar Y.class (Y.class is the file to be converted, X.jar is the converted file)
Such as:

D:\java\studio\sdk\build-tools\22.0.1>jar cvf hack.jar Com/chaos/hack/antilazylo
ad.class
added list
adding: com/chaos/hack/antilazyload.class (input = 213) (output = 178) (compressed 16%)

3. Convert the jar file into a dex binary jar file: Dx–dex–output=x.jar Y.jar (Y.jar is the file to be converted, X.jar is the converted file)
Such as:

D:\JAVA\STUDIO\SDK\BUILD-TOOLS\22.0.1>DX--dex--output=patch_dex.jar Patch.jar