Thanks everyone. I just post the same message in the wrong group. I missed 4 questions: declaration: 87% AWT: 75% Thread: 71% all others are 100%. Some thread questions have 30 lines of codes. I thought I understood them but I missed 2 of them. I'm a lucky guy - on mock exams I usually scored about 75% (range 62% - 93%). I thought I would be happy If I scored +80%. The web site I found very helpful is: www.javaprepare.com/links.html. Also playing javaranch's Round-up game until you hit 100%. JQPlus is helpful too.