added Java checkboxes example
added Java checkboxes example

tourdedave/elemental-selenium-tips,tjmaher/elemental-selenium-tips,tourdedave/elemental-selenium-tips,tjmaher/elemental-selenium-tips,tourdedave/elemental-selenium-tips,tjmaher/elemental-selenium-tips,tourdedave/elemental-selenium-tips,tourdedave/elemental-selenium-tips,GDasai/elemental-selenium-tips,tourdedave/elemental-selenium-tips,tjmaher/elemental-selenium-tips,GDasai/elemental-selenium-tips,GDasai/elemental-selenium-tips,tjmaher/elemental-selenium-tips,tjmaher/elemental-selenium-tips,GDasai/elemental-selenium-tips