drawString绘制文字报错

大家好 ，我用myEclipse写验证码的时候，g.drawString("xxx",0,0)方法报错，提示
java.lang.Error: Unresolved compilation problem:
The type java.lang.CharSequence cannot be resolved. It is indirectly referenced from required .class files，各位有什么解决办法？

http://blog.163.com/lujun0918@126/blog/static/32603828200803079124/

http://zhidao.baidu.com/link?url=CZVWOUPcNbOy3FPoQKc-zPZZRAyM68xPhQ-mPBkrj2-9HziRlNO63bLrEvVhuSJ47qbThFA0gCBfCr6KTw-ChSyTcOqFPPwCZ07oZwYKynW

我也是这样，你解决了吗？