????????? ???????????? source ???￡? ? source ?????????? ????????￡? ???? ???????Main.java??1?? Package pktest not found in import.import pktest.*??    ?????漰????·???а???????????? ????????????????裺 "?????????????????????????"?? ????????????. ??? jdk ?? ???? javac javajavadoc ??????????? ???????? ????????????? ????import ?????????????????????. ????????У? import pktest.*?? ?????????·???????????????? ??????????????? ?????и??? /myclass?? ??????????/myclass/pktest ???????μ???. ???е????飬 ?????л???. ???????????·????е?????? ???????????? pktest ???? ????????. ??·??????????? .jar .zip ????? ??Щ????????????????? ????? .jar .zip??????????????????? ??????????????.

????????? ??????????????? ????????????￡?

PackageTest
|
|__source   Main.java
|
|__pktest   PackageTest.java   PackageSecond.java
|
|__subpk  PackageSub.java

??????????±??? ???У? ?????? ?????. ??????????????? PackageTest.

????[source]$ java pktest/PackageTest

???????????????

????Exception in thread "main" java.lang.NoClassDefFoundError?? pktest/PackageTest ????????? java ??????е?????????????? ????????????????????? ?????????????????????????????? ???????? pktest/PackageTest ??????????????????? ??????????? ??????????

????[source]$ java pktest.PackageTest

??????????????????? ????????. ??? javac ??????? ????????????·????? javac ????? ?????У? ?????????????????????? import ???????? ??????????????й??.   ???????Щ????????? ???????? .class ???????????? ????????. ????javac ????? -d ?????в????? ?????????????? ??????? .class ????????????ú??????????????.

[source]$ mkdir classes
[source]$ javac -d classes pktest/PackageTest.java
[source]$ javac -d classes Main.java

?????????????????????

[source]$ cd classes
[classes]$ java pktest.PackageTest
[classes]$ java Main

??????????. ??? jdk ??????????С????? ??????? ????????????????????????￡? ?????????????????Щ??????????. ????????????????????????????????? ?????????? ???????? ????????Щ???????????? ????? bbs ??? ???????????????????巽???? ?????????????仯???????????????. ???????????????? java ????????????????????? ??С?????(?????????)?? ???????????????.