代碼總是出現這個錯誤
The type java.io.ObjectInputStream cannot be resolved. It is indirectly referenced from required .class files
疏影暗香4171408
2016-12-01
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2016-12-01
右擊工程------》properties---》java?bulid??path----》libraries----》add?library----》jre?system?library--》?workspace?defalult?JRE?選上