debraj mallick

hi Somnath,
class Arts consists of
private string fileData //getters and setters

hi all,
i am using the following code to read from a file and put the content into a arraylist
BufferedReader br = null; List<Arts> arts = new ArrayList<Arts>(); // Arts is simple pojo try { String line; br = new BufferedReader(new FileReader("C:\\db\\arts.txt")); while ((line = br.readLine()) != null) { Arts art = new Arts(); art.setFileData(line); arts.add(art); } } catch (IOException e) { e.printStackTrace(); }finally { br.close(); }
the file "arts.txt" is about 70mb consisting of 760,985 lines. and i am having exception like:
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
i am using -Xmx750m. Is there any way i can read the file and store the content of the file in a list?

any help would be great.

hi all,

my "UserDao" is like:
@Insert("INSERT INTO user(usersId,email) VALUES(#{usersId},#{email})") int insertEmail(UserDTO userDTO);
any my "UserServiceImpl" is like:
@Override public int insertEmail(EmailDTO emailDTO) { int number=userDao.insertEmail(emailDTO); return number; }

the number is always 1, all I need the ID of my table "user" where the new record is insert.
any suggestion would be great.

Thanks Francois, it worked.

hi all

my query in sql is like:
SELECT MAX(`username`) FROM `users` WHERE `username` = 'ww'
but when i am doing the same using ibatis and spring, it is showing exception
query: @Select("SELECT MAX #username# FROM users WHERE username = #{username} AND userType = #{userType}") int checkEmailAvailability(UsersDTO usersDTO);
Exception:
org.springframework.dao.TransientDataAccessResourceException: ### Error querying database. Cause: java.sql.SQLException: Parameter index out of range (1 > number of parameters, which is 0). ### The error may involve com.cloudlabz.product.weather.dao.UserDao.checkEmailAvailability-Inline ### The error occurred while setting parameters ### Cause: java.sql.SQLException: Parameter index out of range (1 > number of parameters, which is 0). ; SQL []; Parameter index out of range (1 > number of parameters, which is 0).; nested exception is java.sql.SQLException: Parameter index out of range (1 > number of parameters, which is 0). org.springframework.jdbc.support.SQLStateSQLExceptionTranslator.doTranslate(SQLStateSQLExceptionTranslator.java:107) org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72) org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80) org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80) org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:71) org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358) $Proxy5.selectOne(Unknown Source) org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:155) org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:75) org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:25) $Proxy12.checkEmailAvailability(Unknown Source) com.cloudlabz.product.weather.business.impl.UserServiceImpl.checkEmailAvailability(UserServiceImpl.java:37) com.cloudlabz.product.weather.controller.RegistrationController.processRegistration(RegistrationController.java:54) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:597) org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:212) org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126) org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96) org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617) org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578) org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789) javax.servlet.http.HttpServlet.service(HttpServlet.java:637) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393) java.sql.SQLException: Parameter index out of range (1 > number of parameters, which is 0). com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1073) com.mysql.jdbc.SQLError.createSQLException(SQLError.java:987) com.mysql.jdbc.SQLError.createSQLException(SQLError.java:982) com.mysql.jdbc.SQLError.createSQLException(SQLError.java:927) com.mysql.jdbc.PreparedStatement.checkBounds(PreparedStatement.java:3729) com.mysql.jdbc.PreparedStatement.setInternal(PreparedStatement.java:3713) com.mysql.jdbc.PreparedStatement.setString(PreparedStatement.java:4553) org.apache.ibatis.type.StringTypeHandler.setNonNullParameter(StringTypeHandler.java:12) org.apache.ibatis.type.StringTypeHandler.setNonNullParameter(StringTypeHandler.java:8) org.apache.ibatis.type.BaseTypeHandler.setParameter(BaseTypeHandler.java:23) org.apache.ibatis.executor.parameter.DefaultParameterHandler.setParameters(DefaultParameterHandler.java:73) org.apache.ibatis.executor.statement.PreparedStatementHandler.parameterize(PreparedStatementHandler.java:61) org.apache.ibatis.executor.statement.RoutingStatementHandler.parameterize(RoutingStatementHandler.java:43) org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:56) org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:40) org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:243) org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:117) org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:72) org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:79) org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:73) org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:39) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:597) org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:350) $Proxy5.selectOne(Unknown Source) org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:155) org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:75) org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:25) $Proxy12.checkEmailAvailability(Unknown Source) com.cloudlabz.product.weather.business.impl.UserServiceImpl.checkEmailAvailability(UserServiceImpl.java:37) com.cloudlabz.product.weather.controller.RegistrationController.processRegistration(RegistrationController.java:54) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:597) org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:212) org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126) org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96) org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617) org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578) org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789) javax.servlet.http.HttpServlet.service(HttpServlet.java:637) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
Any suggestion would be great.

thanks Rob.

hi all,

i need some idea :
1> how to know whether an rss feed is updated or not,
2> need some event to occur as soon as the rss is updated.

at present i am using quartz after every 1 hr to check for any updated. Is there any way to replace quartz.

any suggestion would be great.

hi Mark,

thanks for your response, well i don't know much about spring security, but i will learn it.
anyway thanks a lot.

hi Mark,

i understand the way you explained, but what i need is as follows:
i am in page where customer places there order (i.e. url is like example.com/customer/order), now during checking out, the customer need to login (i.e. example.com/login). once login is done, i need to take the customer to the same page where he was before (i.e. example.com/customer/order).
so the same thing happens when the customer want to modify there order (because customer can see their order status with orderId without login to the system).

so how can i get "/customer/order" or "/customer/order/modify"in login
@RequestMapping("/login") public String login() { return "???" }

hi all,

is there any method or something in spring like we have in struts1 i.e. mapping.getInputForward()
any suggestion would be great.

hope this would help
http://www.oodesign.com/factory-pattern.html

hi neera,

we use factory design pattern when we do not know which class of object we should create, so if you know the className then no need to use factory pattern.
any suggestion or comments would be great.

hi all,

has anybody implemented Tesseract OCR with java,
any help would be great.

http://code.google.com/p/tesseract-ocr/

thank you Vince Stout and John Jai.

hi Mohamed Sanaulla,

thanks for the use link, should i use this to declare an infinite 2D array.
ArrayList<ArrayList<String>> myList = new ArrayList<ArrayList<String>>();
is there any way where i can obtain value in a perticular position like we do when using simple 2D array i.e. arr[59][987].