1.增加\x0d\x0aString s1="insert into tableNames (id,name,password) values(myseq.nextval,?,?)"\x0d\x0aClass.forName(driver)\x0d\x0aConnection conn = DriverManager.getConnection(url,dbUser,dbPwd)\x0d\x0aPreparedStatement prepStmt = conn.prepareStatement(s1)\x0d\x0aprepStmt.setString(1,name)\x0d\x0aprepStmt.setString(2,password)\x0d\x0aResultSet rs=stmt.executeUpdate()\x0d\x0a2、删除\x0d\x0aString s2="delete from tbNames where name=?"\x0d\x0aClass.forName(driver)\x0d\x0aConnection conn = DriverManager.getConnection(url,dbUser,dbPwd)\x0d\x0aPreparedStatement prepStmt = conn.prepareStatement(s2)\x0d\x0aprepStmt.setString(1,name)\x0d\x0aResultSet rs=stmt.executeUpdate()\x0d\x0a3、修改\x0d\x0aString s3=“update tbNames set name=? where id=?”\x0d\x0aClass.forName(driver)\x0d\x0aConnection conn = DriverManager.getConnection(url,dbUser,dbPwd)\x0d\x0aPreparedStatement prepStmt = conn.prepareStatement(s3)\x0d\x0aprepStmt.setString(1,name)\x0d\x0aprepStmt.setString(2,id)\x0d\x0aResultSet rs=stmt.executeUpdate()\x0d\x0a4、查询\x0d\x0aString s4="select id,name,password from tbNames"\x0d\x0aClass.forName(driver)\x0d\x0aConnection conn = DriverManager.getConnection(url,dbUser,dbPwd)\x0d\x0aStatement stmt=conn.createStatement()\x0d\x0aResultSet rs = stmt.executeQuery(s4)\x0d\x0awhile(rs.next){\x0d\x0aint id=rs.getInt(1)\x0d\x0aString name = rs.getString(2)\x0d\x0aString pwd=rs.getString(3)\x0d\x0aSystem.out.println(id+name+pwd)} \x0d\x0a\x0d\x0a以上四步必须
都得关闭连接;!!!\x0d\x0ars.close()\x0d\x0astmt.close()\x0d\x0aconn.close()1.增加
String s1="insert into tableNames (id,name,password) values(myseq.nextval,?,?)"
Class.forName(driver)
Connection conn = DriverManager.getConnection(url,dbUser,dbPwd)
PreparedStatement prepStmt = conn.prepareStatement(s1)
prepStmt.setString(1,name)
prepStmt.setString(2,password)
ResultSet rs=stmt.executeUpdate()
2、删除
String s2="delete from tbNames where name=?"
Class.forName(driver)
Connection conn = DriverManager.getConnection(url,dbUser,dbPwd)
PreparedStatement prepStmt = conn.prepareStatement(s2)
prepStmt.setString(1,name)
ResultSet rs=stmt.executeUpdate()
3、修改
String s3=“update tbNames set name=? where id=?”
Class.forName(driver)
Connection conn = DriverManager.getConnection(url,dbUser,dbPwd)
PreparedStatement prepStmt = conn.prepareStatement(s3)
prepStmt.setString(1,name)
prepStmt.setString(2,id)
ResultSet rs=stmt.executeUpdate()
4、查询
String s4="select id,name,password from tbNames"
Class.forName(driver)
Connection conn = DriverManager.getConnection(url,dbUser,dbPwd)
Statement stmt=conn.createStatement()
ResultSet rs = stmt.executeQuery(s4)
while(rs.next){
int id=rs.getInt(1)
String name = rs.getString(2)
String pwd=rs.getString(3)
System.out.println(id+name+pwd)}
以上四步必须都得关闭连接;!!!
rs.close()
stmt.close()
conn.close()
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