?????????????java???????У????????jdk?????????????????????д????????????????????
??????÷?????
????1.???jdk.exe
????2.???????????jdk????String
????3.??????????????????????????????
????3.?????????????????????????????????????????????????????????????
????4.?????????????????????????3??????
????5.???test??????????????
????Ps:
????1.??list??Collection?????1..99???????????Χ??????1#2#3????б?
????2.????ù????????????????????
????3.??GetInstance()????????????????????????????????????????????????????ɡ?
????????????
????/Files/itcrown/jdk_test.rar