bablu singh

No 3 is also correct. I am not sure about no 4 because as far as I know it should return positive integers but when I googled I found that we get a negative integer after the overflow. Negative hashcode is perfectly valid! It is perfectly legal to have negative hash codes.  Can you please share your thoughts.

The link is really helpful and to your question it is just like the second bullet point in that link:
"If two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result."

Does this mean that Option 1 is the correct answer?

Which of the following statements are true about hashCode in java?
1. if two objects are declared equal using the equals() method then they must have the same hash codes.
2. if two objects are declared equal using the equals() method then they may or may not have the same has codes.
3. during the execution of the java application if the hashCode() method is called on the same object multiple times then the method must return the same integer value.
4. the object class has a hashCode() method that returns only positive integers.

Option 1 - 1 and 3
Option 2 - 2 and 4
Option 3 - 2, 3 and 4
Option 4 - 1, 3 and 4

Which option is true. I am confused in Option 2 and Option 3.

You were right, its not pickin up the property file. URL value is coming as null, not only URL but username and password also. Then I tried:public String listZones() throws SQLException { System.out.println("In listZones method"); //getJdbcTemplate(); AppConfig appConfig = new AppConfig(); DataSource ds = appConfig.dataSource(); System.out.println("DS Detail:"+ds.getConnection()); /*getJdbcTemplate(); String sql = "SELECT ORG_ZONE,ORG_TEAM FROM NG_REPORTING_01.LOCATION_HIERARCHY  WHERE ORG_ZONE = 'OHN' AND ORG_TEAM LIKE '%LG' AND ORG_SITE LIKE 'Y%' "; List<Zone> zones = jdbcTemplate.query(sql, new ZoneMapper()); for(Zone z:zones) { System.out.println(z); }*/ return "List Zones Called"; }Its again giving me java.sql.SQLException: Invalid Oracle URL specified: OracleDataSource.makeURL error.public class ZoneDAOImpl implements ZoneDAO { @Autowired private AppConfig appConfig; public String listZones() throws SQLException { System.out.println("In listZones method"); //getJdbcTemplate(); DataSource ds = appConfig.dataSource(); System.out.println("DS Detail:"+ds.getConnection()); /*getJdbcTemplate(); String sql = "SELECT ORG_ZONE,ORG_TEAM FROM NG_REPORTING_01.LOCATION_HIERARCHY WHERE ORG_ZONE = 'OHN' AND ORG_TEAM LIKE '%LG' AND ORG_SITE LIKE 'Y%' "; List<Zone> zones = jdbcTemplate.query(sql, new ZoneMapper()); for(Zone z:zones) { System.out.println(z); }*/ return "List Zones Called"; } }Its giving me null pointer exception. Its not initializing appConfig by Autowiring. Could you please point me out where I am wrong.

I am using oracle jdbc pool datasource - oracle.jdbc.pool.OracleDataSource (ojdbc7-12.1.0.2.jar) and it's working properly using first approach. This Spring based application is not having any configuration XML file, Its purely a java based configuration. URL and credentials are configured in properties file. It's not using LDAP for authentication.
import java.sql.SQLException; import javax.sql.DataSource; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.jdbc.core.JdbcTemplate; import org.springframework.stereotype.Component; import oracle.jdbc.pool.OracleDataSource; @Component @Configuration @ConfigurationProperties(prefix = "spring.datasource") public class AppConfig {    private String url;    private String username;    private String password;    public AppConfig() {}    getter/setter..    @Bean    public DataSource dataSource() throws SQLException {        OracleDataSource oracleDS = new OracleDataSource();        oracleDS.setUser(username);        oracleDS.setPassword(password);        oracleDS.setURL(url);        oracleDS.setImplicitCachingEnabled(true);        oracleDS.setFastConnectionFailoverEnabled(true);        return oracleDS;    } }

Hi Mohammed, Thanks for looking into it.
As you suggested, all jars are in place, building using maven.
I checked the database connection with SQLDeveloper, its connecting properly.
Also, tried debugging and I am getting the error at line no 53. Please see the logs.
Connection URL is also valid and its in the jdbc: oracle:thin:@localhost:9080:xe format. Also, same is working using first approach, as I mentioned earlier.
1. package com.college.dao.impl; 22. @Repository 23. @ComponentScan 24. public class ZoneDAOImpl implements ZoneDAO { 28. private JdbcTemplate jdbcTemplate; 30. public ZoneDAOImpl() {} 37. public void getJdbcTemplate() { 39. try { 40. System.out.println("In getJdbcTemplate"); 41. this.jdbcTemplate = new JdbcTemplate(new AppConfig().dataSource()); 42. } catch(SQLException e) { 43. e.printStackTrace(); 44. } 45. } 47. @Override 48. public String listZones() throws SQLException { 49. System.out.println("In listZones method"); 50. getJdbcTemplate(); 51. String sql = "SELECT ZONE,TEAM FROM LOCATION WHERE ZONE = 'OHN' AND TEAM LIKE '%LG' AND SITE LIKE 'Y%' "; 53. List<Zone> zones = jdbcTemplate.query(sql, new ZoneMapper()); 54. for(Zone z:zones) { 55. System.out.println(z); 56. } 58. return "List Zones Called"; 59. } 60. } 2017-07-06 11:11:49.325  INFO 8796 --- [bio-8085-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization completed in 32 ms In listZones method In getJdbcTemplate 2017-07-06 11:11:49.404 ERROR 8796 --- [bio-8085-exec-1] o.s.boot.web.support.ErrorPageFilter     : Forwarding to error page from request [/listZones] due to exception [Could not get JDBC Connection; nested exception is java.sql.SQLException: Invalid Oracle URL specified: OracleDataSource.makeURL] org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Invalid Oracle URL specified: OracleDataSource.makeURL        at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80) ~[spring-jdbc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:394) ~[spring-jdbc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:474) ~[spring-jdbc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:484) ~[spring-jdbc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at com.college.dao.impl.ZoneDAOImpl.listZones(ZoneDAOImpl.java:53) ~[classes/:na]        at com.college.service.ZoneService.listZones(ZoneService.java:31) ~[classes/:na]        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_101]        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_101]        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_101]        at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_101]        at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) ~[spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133) ~[spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at javax.servlet.http.HttpServlet.service(HttpServlet.java:624) ~[servlet-api.jar:na]        at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) ~[servlet-api.jar:na]        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) [catalina.jar:7.0.73]        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.73]        at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) ~[tomcat7-websocket.jar:7.0.73]        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.73]        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_101]        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-coyote.jar:7.0.73]        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_101] Caused by: java.sql.SQLException: Invalid Oracle URL specified: OracleDataSource.makeURL        at oracle.jdbc.pool.OracleDataSource.makeURL(OracleDataSource.java:1536) ~[ojdbc7-12.1.0.2.jar:na]        at oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:214) ~[ojdbc7-12.1.0.2.jar:na]        at oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:184) ~[ojdbc7-12.1.0.2.jar:na]        at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) ~[spring-jdbc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) ~[spring-jdbc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        ... 65 common frames omitted

Could anyone look into it?

I am making connection with Oracle DataSource and I am able connect with DB using first approach. But getting error using second approach. I want to use second approach. I want to make data connection in impl class.

First Approach
Properties file spring.datasource.url=jdbc:oracle:thin:@X.X.X.X:X:X spring.datasource.username=username spring.datasource.password=password spring.datasource.driver-class-name=oracle.jdbc.driver.OracleDriver AppConfig.java package com.college.config; @Component @Configuration @ConfigurationProperties(prefix = "spring.datasource") public class AppConfig { private String url; private String username; private String password; public AppConfig() {} getter/setter.. @Bean    public DataSource dataSource() throws SQLException {        OracleDataSource oracleDS = new OracleDataSource();        oracleDS.setUser(username);        oracleDS.setPassword(password);        oracleDS.setURL(url);        oracleDS.setImplicitCachingEnabled(true);        oracleDS.setFastConnectionFailoverEnabled(true);        return oracleDS;    } } package com.college.DAV; @EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class}) @SpringBootApplication(scanBasePackages={"com.college"}) public class DavApplication extends SpringBootServletInitializer { protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {     return builder.sources(DavApplication.class);    } } package com.college.service; @RestController @RequestMapping("/") public class ZoneService { @Autowired private AppConfig appConfig; @RequestMapping("/greetMe") public String greetMe(){ return "Hello!! Application is running!!"; } @RequestMapping("/listZones") public String listZones() throws SQLException { ZoneDAO zoneDAO = new ZoneDAOImpl(); zoneDAO.setDataSource(appConfig.dataSource()); return zoneDAO.listZones(); } } package com.college.dao.impl; @Repository @ComponentScan public class ZoneDAOImpl implements ZoneDAO { private JdbcTemplate jdbcTemplate;    public ZoneDAOImpl() {}   @Override public void setDataSource(DataSource dataSource) { this.jdbcTemplate = new JdbcTemplate(dataSource); } @Override public String listZones() throws SQLException { System.out.println("In listZones method"); String sql = "SELECT ZONE,TEAM FROM LOCATION WHERE ZONE = 'DEF' AND TEAM LIKE '%LG' AND SITE LIKE 'Y%' "; List<Zone> zones = jdbcTemplate.query(sql, new ZoneMapper()); for(Zone z:zones) { System.out.println(z); } return "List Zones Called"; } }
Second Approach:
package com.college.service; @RestController @RequestMapping("/") public class ZoneService { @RequestMapping("/greetMe") public String greetMe(){ return "Hello!! Application is running!!"; } @RequestMapping("/listZones") public String listZones() throws SQLException { ZoneDAO zoneDAO = new ZoneDAOImpl(); return zoneDAO.listZones(); } } package com.college.dao.impl; @Repository @ComponentScan public class ZoneDAOImpl implements ZoneDAO { @Autowired private AppConfig appConfig; private JdbcTemplate jdbcTemplate;    public ZoneDAOImpl() {} public void getJdbcTemplate() { try { this.jdbcTemplate = new JdbcTemplate(appConfig.dataSource()); } catch(SQLException e) { System.out.println("Exception:"+e.getMessage()); } } @Override public String listZones() throws SQLException { System.out.println("In listZones method"); getJdbcTemplate(); String sql = "SELECT ZONE,TEAM FROM LOCATION WHERE ZONE = 'OHN' AND TEAM LIKE '%LG' AND SITE LIKE 'Y%' "; List<Zone> zones = jdbcTemplate.query(sql, new ZoneMapper()); for(Zone z:zones) { System.out.println(z); } return "List Zones Called"; } } 2017-06-14 18:10:20.572 ERROR 8592 --- [bio-8085-exec-1] o.s.boot.web.support.ErrorPageFilter     : Forwarding to error page from request [/listZones] due to exception [null] java.lang.NullPointerException: null        at com.college.dao.impl.ZoneDAOImpl.getJdbcTemplate(ZoneDAOImpl.java:26) ~[classes/:na]        at com.college.dao.impl.ZoneDAOImpl.listZones(ZoneDAOImpl.java:34) ~[classes/:na]        at com.college.service.ZoneService.listZones(ZoneService.java:12) ~[classes/:na]        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_101]        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_101]        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_101]        at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_101]        at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) ~[spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133) ~[spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at javax.servlet.http.HttpServlet.service(HttpServlet.java:624) ~[servlet-api.jar:na]        at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) ~[spring-webmvc-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) ~[servlet-api.jar:na]        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) [catalina.jar:7.0.73]        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.73]        at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) ~[tomcat7-websocket.jar:7.0.73]        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.73]        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.73]        at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.73]        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.73]        at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:105) ~[spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.73]        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.73]        at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) ~[spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.73]        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.73]        at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) ~[spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.73]        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.73]        at org.springframework.boot.web.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:115) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]        at org.springframework.boot.web.support.ErrorPageFilter.access$000(ErrorPageFilter.java:59) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]        at org.springframework.boot.web.support.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:90) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.9.RELEASE.jar:4.3.9.RELEASE]        at org.springframework.boot.web.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:108) [spring-boot-1.5.4.RELEASE.jar:1.5.4.RELEASE]        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.73]        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.73]        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218) [catalina.jar:7.0.73]        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) [catalina.jar:7.0.73]        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) [catalina.jar:7.0.73]        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) [catalina.jar:7.0.73]        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) [catalina.jar:7.0.73]        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:958) [catalina.jar:7.0.73]        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) [catalina.jar:7.0.73]        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452) [catalina.jar:7.0.73]        at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087) [tomcat-coyote.jar:7.0.73]        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637) [tomcat-coyote.jar:7.0.73]        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) [tomcat-coyote.jar:7.0.73]        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_101]        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_101]        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-coyote.jar:7.0.73]        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_101]
Could you please guide me. Thanks in advance.

Hi All,

I am a newbie to MB/MQ things. I got to know there is a Message Broker, it has got so many Execution groups. Further Execution groups has got Message flows.

Also we can start and stop the message flows. If we want to stop all then we can stop execution group. It will stop all the message flows.

So the thing, Can we start and stop the Execution group and message flows from Java?

Can we store the information about the execution group and message flows in an array list, because there can be any number of execution groups and message flows?

Any Suggestions...

Thanks for the suggestions...

But, it first uploads the file to a particular location like
String uploadPath = getServletContext().getRealPath("") + File.separator + UPLOAD_DIRECTORY;
and after that we can read the content of the file.

Is there any way, we can read the contents without uploading to a location.

Hi All,

I am uploading XML file from JSP:
<form action="uploadXMLFile" method="post" enctype="multipart/form-data"> <input type="file" name="browseFile" id="browseFile" size="50" /> <input type="submit" id="submitFile" value="SUBMIT" /> </form>
on submit action is getting called and going to servlet.
To read the content of the file I am using below code:
String requestStr = IOUtils.toString(request.getInputStream(), "UTF-8"); System.out.println("Request Str: "+requestStr);
I am getting below output:
Request Str: ------WebKitFormBoundaryYwME8AyJpIFQOu9M Content-Disposition: form-data; name="browseFile"; filename="sample.xml" Content-Type: text/xml <?xml version="1.0" encoding="UTF-8"?> <book> <person> <first>Jason</first> <last>Hugh</last> <age>22</age> </person> <person> <first>David</first> <last>Bill</last> <age>46</age> </person> <person> <first>Steve</first> <last>Thomas</last> <age>40</age> </person> </book> ------WebKitFormBoundaryYwME8AyJpIFQOu9M--
But I want only the xml portion. So that I can read the node contents.

Please help.

I am working on an application that includes a jsp page, having 5 columns and checkbox corresponding
to a row to edit a particular row.

ProjID ProjName ProjDesc ProjEmail Edit
101 Proj101 ProjDesc101 [email protected] checkbox
102 Proj102 ProjDesc102 [email protected] checkbox
103 Proj103 ProjDesc103 [email protected] checkbox

on page load all the fields are readonly, when click on checkbox I can edit Projname, projdesc, email.
e.g. I have checked 3 checkboxes and I am making an array in javascript. The values in array:
"101","Proj1010","ProjDesc1010","[email protected]",":","102","Proj1020","ProjDesc1020","[email protected]",":","103","Proj1030","ProjDesc1030","[email protected]",":"

So I am able to get the value in the servlet using
String[] newVals = request.getParameterValues("editedVals");

I have a class having 4 fields and getter setters.
ProjPojo.java private String projID; private String projname; private String projDesc; private String email; String ar[]=null for(int i=0;i<newVals.length;i++){ ar=newVals[i].split(":"); obj = new EditProjectDetail(); for(int j=0;j<ar.length;j++){; obj.setProjectID(ar[j]); //obj.setProjectName(ar[1]); } newList.add(obj); }
I was trying this code, but nothing happened. I want to set "101","Proj1010","ProjDesc1010","[email protected]"
to one object of ProjPojo and the number of values comes from UI. After that want to update these fields in DB.

Any Suggestion..

That is fine, we should use the JEE built in securing web applications functionality rather than creating own. But, customization is also one of the key area in applications.
So, I tried using the following code:
<interceptors> <interceptor class="com.action.LoginInterceptor" name="loginInterceptor" /> <interceptor-stack name="loginStack"> <interceptor-ref name="loginInterceptor" /> <interceptor-ref name="defaultStack" /> </interceptor-stack> </interceptors> <action name="login" class="com.action.LoginAction"> <result name="success" type="redirect">homeAction</result> <result name="login">Login.jsp</result> <result name="input">Login.jsp</result> </action> <action name="homeAction" class="com.action.LoginAction" method="home"> <interceptor-ref name="loginStack" /> <result name="login">Login.jsp</result> <result name="success">Welcome.jsp</result> </action>
When I execute, I am getting the following error:
SEVERE: Exception occurred during processing request: No result defined for action com.action.LoginAction and result input No result defined for action com.action.LoginAction and result input
Then I changed my action to:
<action name="homeAction" class="com.action.LoginAction" method="home"> <interceptor-ref name="loginStack" /> <result name="login">Login.jsp</result> <result name="success">Welcome.jsp</result> <result name="input">Login.jsp</result> </action>
Now the user is getting logged in, but it returns to Login page again saying that email id and password can not left blank, as it should redirect to Welcome.jsp
Any Suggestion.

Hi guys,
I created a SessionInterceptor that checks whether the user information is present in session and session is expired or not. If the session is null or empty then I want to return the control to Login page. But the problem is when I enter valid username and password it goes to the session interceptor class, and it says session is null and it return to login page again.
struts.xml <interceptors> <interceptor name="sessionInterceptor" class="com.session.SessionInterceptor" /> <interceptor-stack name="sessionCheckStack"> <interceptor-ref name="sessionInterceptor" /> <interceptor-ref name="defaultStack" /> </interceptor-stack> </interceptors> <global-results> <result name="invalidSession">Login.jsp</result> </global-results> <action name="login" class="com.usermgmt.UserLoginAction"> <interceptor-ref name="sessionCheckStack"></interceptor-ref> <result name="success">Welcome.jsp</result> <result name="input">Login.jsp</result> <result name="error">Login.jsp</result> <result name="invalidSession">Login.jsp</result> </action> //SessionInterceptor public class SessionInterceptor extends AbstractInterceptor { @Override public String intercept(ActionInvocation invocation) throws Exception { Map<String,Object> session = invocation.getInvocationContext().getSession(); System.out.println("Checking ssession"); if(session.get("firstName") == null) { System.out.println("Your session has expired."); return "invalidSession"; } return invocation.invoke(); } }
How would session will be created if the user does not logged in, as it redirects me before logging in the user.
Any Suggestion.

You can try with the following
<s:form action="EmployeeAction" validate="true">