(Requires environment as described in Building Java2Script itself)

• In Eclipse
  • open project 'net.sf.j2s.lib' in the Project or Package Explorer.
  • Right-click "build/build.xml" and select "Run As > Ant Build"
  • (The build will start, with output written to the Eclipse console)
  • Check the output. If it contains errors like java.io.FileNotFoundException: ... j2slib.z.js
    • repeat: Right-click "build/build.xml" and select "Run As > Ant Build"
    • (See issue #15 for details)
  • In the project directory of 'net.sf.j2s.lib' you will find a directory j2slib with the freshly build runtime library.

By default Java2Script applications will use the j2slib installed in the plugin directory of Eclipse, at %ECLIPSE_HOME%/plugins/net.sf.j2s.lib_x.y.z/j2slib. (Details on %ECLIPSE_HOME%).

If you are frequently editing the j2slib sources you may want to replace the j2slib directory in the Eclipse directory with a symbolic/soft link to the j2slib directory in the project directory of 'net.sf.j2s.lib'. This way Java2Script applications will always use the must recently build j2slib.