Steps:
1. Generate java doc html with javadoc in ja or zh_CN locale.
2. Open the html, click on a class
3. Go to Method Summary block

Result:
The tabs "All Methods", "Instance Methods", and "Concrete Methods" etc. are not localized for ja and zh_CN.

At least "All" and "Methods" should be localized?

Refer to http://bej301328.cn.oracle.com/gatejava/test/jdk2/results/8/drop50pit1/jdk-x64-offline/win2k8r2-ja/javadocsrc/index.html