java课程设计

摘要： In CMD, we can use the JDK's command: jar.1. To pack two .class files into an archive named testPackage.jarjar cvf testPackage.jar classFile1.class classFile2.class2. To pack two .class files into an archive named testPackage2.jar with the usage of a existant manifest file "manifestForTest& 阅读全文

摘要： package com.han.ch20.q1; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.ResultSetMetaData; import java.sql.SQLException; import com.han.Derby; public class UpdateStu { private static Connection conn; private static PreparedStatement ps; ... 阅读全文