Query
SELECT * FROM users WHERE username='Sorin' AND password='orice' OR 'a' = 'a';SELECT * from users;--';


EXCEPTION
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: 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 '--'' at line 1
	at sun.reflect.GeneratedConstructorAccessor14.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:409)
	at com.mysql.jdbc.Util.getInstance(Util.java:384)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3566)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3498)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:919)
	at com.mysql.jdbc.MysqlIO.readAllResults(MysqlIO.java:1790)
	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2171)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2562)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2512)
	at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1476)
	at org.MySQLdbConnection.getResultSet(MySQLdbConnection.java:73)
	at org.MySQLdbLoginValidation.doPost(MySQLdbLoginValidation.java:52)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:527)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:423)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:493)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:930)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:358)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:866)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:245)
	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:126)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:113)
	at org.eclipse.jetty.server.Server.handle(Server.java:351)
	at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:594)
	at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:1059)
	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:764)
	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:217)
	at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:424)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:506)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:436)
	at java.lang.Thread.run(Thread.java:636)