Program Talk

Recently we faced an issue while upgrading to the latest version 5.0.1 for poi. And we ended up having following jars for logging all logs to log4j log4j-slf4j-impl-2.14.0.jar jcl-over-slf4j-1.7.30.jar slf4j-api-1.7.30.jar log4j-api-2.14.0.jar log4j-core-2.14.0.jar log4j-web-2.14.0.jar We use hibernate in our web application. And hibernate needs slf4j for logging.  With our update the hibernate logs are no more … Read more

Recently we were working with apache poi. And we switched to openjdk16 from oracle java 1.8.  On our test server we started seeing the following error: java.lang.UnsatisfiedLinkError: /openjdk/lib/libawt_xawt.so: libXtst.so.6: cannot open shared object file:  So looking at the error we saw that  ls -l /openjdk/lib/libawt_xawt.so was listing the file. So the file was there. And … Read more

Problem :     Eclipse :the input type of launch configuration does not exist Solution :    I had created a Test class with a different file name than the name of the class itself.    File Name : Test1.java    And the contents were : class Test{ } On running this test in eclipse I … Read more

Problem : java.lang.IllegalStateException: Unrecoverable indexation failures: 1 errors among 1 requests SonarQube sometimes fails to upload the sonar analysis results with the exception java.lang.IllegalStateException: Unrecoverable indexation failures: 1 errors among 1 requests Cause : Most probably the disk is full on the sonar hosting server. Solution: Solution is simply to clean up the disk space … Read more

While running TestNg Tests if you see the below error Caused by: org.testng.TestNGException: Cannot find class in classpath: com.* The most common mistake is that you have defined the package as a class in testng.xml and not the package. The correct way to include all classes in a package like below:   <!DOCTYPE suite SYSTEM … Read more

Problem: 03-May-2021 19:15:28.056 SEVERE [ajp-nio-9209-exec-4] org.apache.catalina.core.StandardContext.listenerStart Error configuring application listener of class [com.sun.xml.ws.transport.http.servlet.WSServletContextListener]java.lang.ClassNotFoundException: com.sun.xml.ws.transport.http.servlet.WSServletContextListener Cause : jaxws-rt.jar is either missing or has multiple versions. Solution 1:   If you don’t have this jar add it to tomcat/lib folder.  Solution 2:    For maven, you can add the dependency in your pom.xml. Make sure to pick … Read more

Recently after updating to tomcat 9 and openjdk 16, we started to have an issue with redeployments not going well. We got a lot of InvocationTargetException’s in our logs once redeployment was started. Problem turned out to be the name of our war file grim#dandel.war. So we fixed it be renaming the war file and … Read more