Why do I get this SQLException?

Question

Hello!
I got two questions
1)
I'm using Mysql, I can insert without any problems but I can't do "UPDATE" then I get this error:
("key" is my primary key)
----------------------------------------- ERROR ------------------------------------------
java.sql.SQLException: Syntax error or access violation, message from server: "You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near 'key = '2'' at line 1"
My syntax looks like:
---------------------------------- SYNTAX ------------------------------------------------
public void setUpdate(String i) throws IOException{
try{
Class.forName(driverName);
catch(ClassNotFoundException cfn){
System.out.println(cfn);
try{
Connection con = DriverManager.getConnection(fileURL,"", "");
Statement updateStatement=con.createStatement();
int noOfRows=updateStatement.executeUpdate("UPDATE tider SET fut1='"+getNamntag()+"', eut1='"+getNamntag2()+"', fut2='"+getMednamntag()+"', eut2='"+getMednamntag2()+"',grupput='"+getGrupput()+"', ledig='"+false+"' WHERE key = '"+i+"'");
catch(SQLException sqe){
System.out.println(sqe);
2)
I've got a table with "users" and their passwords"
When I'm searching in my table if the password is correct, given "firstname" and "secondname" I get an error which looks like: (it occurs when there are more rows than 1 in my table "spelare")
-----------------------------------------ERROR ------------------------------------------------------
java.sql.SQLException: After end of result set
     at com.mysql.jdbc.ResultSet.checkRowPos(ResultSet.java:3626)
     at com.mysql.jdbc.ResultSet.getString(ResultSet.java:1772)
     at com.mysql.jdbc.ResultSet.getString(ResultSet.java:1837)
     at inlamning.KollBeanId.kontroll(KollBeanId.java:331)
     at org.apache.jsp.start$jsp._jspService(start$jsp.java:130)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:201)java.sql.SQLException: After end of result set
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:381)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:473)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
     at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
     at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
     at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
     at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
     at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1027)
     at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125)
     at java.lang.Thread.run(Thread.java:536)
My syntax looks like:
public void kontroll(){
String anv="";
String pass="";
String fileURL = "jdbc:mysql://localhost/tider?user="+anv+"&password="+pass;
String driverName ="com.mysql.jdbc.Driver";
try{
Class.forName(driverName);
catch(ClassNotFoundException cfn){
System.out.println(cfn);
try{
String fnamn="";
String enamn="";
String p="";
Class.forName(driverName);
Connection con = DriverManager.getConnection(fileURL,"","");
Statement selectStatement = con.createStatement();
String query = "SELECT * FROM spelare";
ResultSet rs = selectStatement.executeQuery(query);
while (rs.next()||!korrekt) {
fnamn= rs.getString("fnamn");
enamn = rs.getString("enamn");
p = rs.getString("passw");
if(fnamn.equals(fnamnkontr)&&enamn.equals(enamnkontr)&&p.equals(password)){
korrekt = true;
spelarefinns=true;
player=new Player();
player.pnr=rs.getString("pnr");
player.fnamn=fnamn;
player.enamn=enamn;
player.passw=p;
player.division=rs.getString("division");
player.email=rs.getString("email");
player.tel=rs.getString("tel");
player.mobtel=rs.getString("mobtel");
else{korrekt=false;}
selectStatement.close();
con.close();
rs.close();
catch(Exception evt){
System.out.println(evt);
evt.printStackTrace();
Thanks for helping me !

Answer 1

your problem probably stems from the fact that key is a reserved word in MySQL. meaning you shouldn't have used it for a column name.
to fix your query try either of the following... both should work.
String sql2 = "UPDATE tider SET fut1='test', eut1='test', fut2='test', eut2='asdf',grupput='1', ledig='false' WHERE `key` = '6'";
String sql2 = "UPDATE tider SET fut1='test', eut1='test', fut2='test', eut2='asdf',grupput='1', ledig='false' WHERE tider.key = '6'";for more on MySQL reserved words see this http://www.mysql.com/doc/en/Reserved_words.html