My spring boot application communicate to a remote https url and it gives the above mentioned error while hitting a POST request. I went through multiple stackoverflow posts for the same topic. Installed/imported required certificates using keytool and restarted JVM. But that didn’t resolve my issue. The error message is the same, however the root cause is different here apart
Convert String to LocalDate
I want to convert 21022019 to 2019-02-21, but some reason I am not able to convert. import org.joda.time.LocalDate; import org.joda.time.LocalDateTime; import org.joda.time.format.DateTimeFormat; …
Uninstalling app: “App is part of the following app: …” Why is that?
I realized that my self programmed app shows a strange dialog when I try to uninstall it: Normally if you try to uninstall any other app it says… What have I done wrong? Where do I have to change something? Answer Ok, now I accidentally found out why and when this happens: If you change “android:label” of the Launcher Activity
Why should Tomcat’s PersistentValve not be used where there may be concurrent requests per session?
In the class comments at the top of PersistentValve there is a usage constraint: Why is this constraint here? Perusing the code I see three reasons: Concurrent requests for the same session on different Tomcat instances may be subject to “last write wins” and thus potential loss of session data. Concurrent requests for the same session on the same Tomcat
How to use Jackson to deserialize external Lombok builder class
I have a 3rd party Lombok builder POJO, one that I cannot modify, that I want to serialize using jackson. Notably it does not have a NoArgsConstructor. On the surface this would appear to be simple, but it is incredibly frustrating in practice as each possible option seems to be counteracted by a different complication. In essence, I’m having trouble
Why in Android documentation Activity classes have static modifier
If we open android documentation we will see that Activity classes have static modifier: I’m used to declaring Activities without static modifier: What is the reason behind using static modifier in Activity class declaration? UPDATE: The static modifiers have been removed from the documentation. Answer It’s Documentation bug. Sadly, they are not rare. You’d normally only use the static modifier
Simple dynamic JTree-based S3 bucket/object chooser example
Before writing my own custom implementation, I have been googling for a complete example of a simple tree-like JTree/JDialog that allows me to dynamically load and expand the contents of a S3 bucket or sub-S3-object-keys. In other words, I don’t want to recursively prefetch all the objects from different buckets beforehand and populate a JTree. The reason is that there
Create schema if does not exist by using spring Jpa with hibernate
I’m working on spring boot 2 application and trying to establish connection with postgresql database with configuring hikari datasource and spring Jpa. I’m succeed in that and i’m using hibernate.hbm2ddl.auto as update so it is creating table if not exists, but only the problem is it is throwing an exception when schema does not exist Error I configured everything manually
How do you specify default values for Jackson deserialization
Up here is my Controller code. Up here is my User class code. When I POST the JSON above, I get the age property to be null. I want Jackson to deserialize the empty fields (“” or null) in JSON with default values. Like this: What should I do? Answer You can define a custom getter property where setting your
How do I force a Spring Boot JVM into UTC time zone?
I saw Force Java timezone as GMT/UTC I tried mvn spring-boot:run -Dexec.args=”-Duser.timezone=GMT” mvn spring-boot:run -Dexec.args=”-Duser.timezone=UTC” user.timezone=UTC in config/application.properties user.timezone=GMT In the pom.xml: mvn spring-boot:run -Dspring-boot.run.jvmArguments=”-Duser.timezone=UTC” But it prints out sun.util.calendar.ZoneInfo[id=”America/New_York”,offset=-18000000,dstSavings=3600000,useDaylight=true,transitions=235,lastRule=java.util.SimpleTimeZone[id=America/New_York,offset=-18000000,dstSavings=3600000,useDaylight=true,startYear=0,startMode=3,startMonth=2,startDay=8,startDayOfWeek=1,startTime=7200000,startTimeMode=0,endMode=3,endMonth=10,endDay=1,endDayOfWeek=1,endTime=7200000,endTimeMode=0]] Spring Boot 1.5.19, Java 8 Answer Use spring-boot.run.jvmArguments property if you want to pass JVM options from Maven Spring Boot Plugin to forked Spring Boot application: This is be equivalent