Java: Pass By Value or Pass By Reference
Data is shared between functions by passing parameters. Now, there are 2 ways of passing parameters: Passing by value: this method copies the value of actual parameter. The called function […]
java
Spring 4+ with Ehcache 3.x
This post describes an example of using Ehcache with a Spring MVC application deployed on Tomcat (not using Spring boot). It is a legacy app that needs to be upgraded. […]
Java: Sort a list of objects according to matching string/pattern
I need to sort a list of objects in which the matching items come up and others will go down so. For instance, a list of objects on which all […]
How to use Spring DataSource bean as data source for Log4j 2 JDBC appender
I would like to log log4j2 messages into a relational database using the datasource defined on application context and initialized using spring using log4j 2.10. One possibility is to add […]
Warning about SSL connection when connecting to MySQL database
After a recent update of mySql, I get this warning: WARN: Establishing SSL connection without server’s identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL […]
Convert timestamp long to normal date format
One simply way to convert a Long time stamp into a formatted string is (time paramter is Long timestamp): Date date = new Date(time); Format format = new SimpleDateFormat("yyyy MM […]
How do I fix a 65535 bytes limit Stacktrace?
It is possible that after an upgrade you may encounter this error on some of the more complex pages and root cause provided by tomcat console is : To solve […]
MappingJacksonHttpMessageConverter not found
I was trying to run a java batch that call an application context without success (it’s a java app that calls a Camel spring context). This is what I get […]
Which log4j configuration are you using?
Sometimes log4j is not working properly and you need to verify where it is actually writing the log entries. This can be easily verified turning on the log4j.debug: -Dlog4j.debug-Dlog4j.debug It […]
Parse an unknown JSON with Jquery
Sometime it happens to receive a JSON string than need to be visualized without knowing the structure. Suppose we have an HTML table: <tbody id="reportTable"> </tbody><tbody id="reportTable"> </tbody> To populate […]