Revert "find way to upload jar file"

This reverts commit f0b24698719ed21654ac8bf8e4642d9857182fe6.
Revert "Revert "find way to upload jar file""

This reverts commit dc07d2873b0754cbd575c21e3dd67ed1ffc76e3b.
version3

compile in widows cmd
javac -cp .;postgresql-9.3-1102.jdbc4.jar  IKDDhw2.java

windows的cmd視窗不夠寬，因此測試時輸出到文件檢查
java -Dfile.encoding=UTF-8 -cp .;postgresql-9.3-1102.jdbc4.jar  IKDDhw2
王建民 >out.txt