1. Use EclipSede's source code -> string to externally 2. Pack, do not play .properties file, but package .properties corresponding to .class files can not package 3. Establish different configuration directories, or Directory of different national languages such as CN EN4 .Properties to different national language directories 5. Change different .properties under different directories, note coded 6. Select language when running, -cp ./ language directory such as: java -cp ./en; .... Java -cp ./cn; ..... use Java to find it in the specified directory .properties