Common websites and tools

openjdk Download url
http://jdk.java.net/18/

meld Document comparison tool :
https://meld.en.softonic.com
http://meldmerge.org

NotePad++ Text codec ：

Android Code submission URL ：
https://code.google.com

Android Code submission record review website ：
https://android-review.googlesource.com

http://source.android.com

https://developer.android.com

https://android.googlesource.com

Search for Android Technical documentation
https://developer.android.google.cn/

Watch online Android System source code URL ：
https://cs.android.com