salebillcontroller增添了两个遍历的方法;
尝试了一下RMI;
Merge branch 'master' of git@github.com:minusone13/InvoicingSystem.git

Conflicts:
	.classpath
Merge branch 'master' of git@github.com:minusone13/InvoicingSystem.git

Conflicts:
	.classpath
Merge branch 'master' of git@github.com:minusone13/InvoicingSystem.git
Merge branch 'master' of git@github.com:minusone13/InvoicingSystem.git