Git ignores files, why are .java files not ignored? How to view .gitignore files?

Question

# built application files
*.apk
*.ap_

# files for the dex VM
*.dex

# Java class files
*.class

# generated files
bin/
gen/

# Local configuration file (sdk path, etc)
local.properties

# Eclipse project files
proguard-project.txt

# Proguard folder generated by Eclipse
proguard/

# Intellij project files
*.iml
*.ipr
*.iws
.idea/

Answer 1

You only ignored the *.class file compiled by java, not *.java

Answer 2

You can take a look at Liao Xuefeng’s GIT blog’s explanation on file ignoring.
Special files ignored

Answer 3

vim .gitignore 查看.gitignore文件
如果你要忽略.java文件，需要加上 *.java