I want to save text file in sqlite android but it is giving an error android.database.sqlite.SQLiteConstraintException: NOT NULL constraint failed: at line long result = db.insert(TABLE_NAME,null,cv);. The path gives this in log Download/Link_on.txt and the readFile(path) returns [49, 10, 48, 48, 58, 48……
Tag: java
Is it possible to run java code when activity is not launched?
I am working on an alarm java application. I want to run Alarm(); function when the systems clock arrives to the targetTime. But I want to do these even the application is not open. So somehow I want to run it in androids background. My code : And this is the class for the DateTimeAlarm : I have no idea
How to get days remaining of a date and print hours minutes and seconds Java8
I’m getting from server an UTC date for instance I’d like to know what is the optimal way to calculate remaining days from now. Here’s what I got now : I’m creating a date for 2 days from now as : I’m parsing it to a DateTime joda I can use other if you say so. When doing the dif…
cannot install hibernate(5.6.0) with intellij(m1chip silicon) in java
I try to run hibernate 5.6.0 in java 16 and I am programming with intellij 2021.2 for apple sillicon. When I run it I get this error: My hibernate.cfg.xml is in source root:source tree Answer Always include the resource files in the separate resources directory. As by default, Maven (and so IDE as well) will …
How to compile OpenJDK with OpenJ9 on Linux without a NUMA error?
Hello Stackoverflowers! I am trying to build the OpenJDK with OpenJ9 on Linux, but when I run the configure script, I get the error: Normally it should have just created the config and let me build, because I don’t have multiple CPUs. I have already googled the error message and looked trough and follow…
What’s the difference between these 2 array definitions?
What us the difference between int[][] a = new int[2][3] and int a[][] = new int[][]{{11,12},{13,14,15}}? I decompiled the .class file and found in the first case, the JVM will use multianwearray to create the array, while in the second case, it will use anewarray. I think in the first case, JVM will create a…
In nimbus-jose-jwt, what is difference between lifespan and refreshTime?
The class DefaultJWKSetCache of nimbus-jose-jwt has two fields, lifespan and refreshTime. From Java docs – lifespan – The lifespan of the cached JWK set before it expires, negative means no expiration. refreshTime – The time after which the cached JWK set is marked for refresh, negative if n…
Change a line to prepared statement
I have this line and I am trying to do this line prepared statement but I am not able to do it. What I did is this : the sql table is this Answer This folwoing code should be encapsuled in a ty catch statment Also i hope you add a password hashing function to your code, every thing else
How to Listen to Vaadin component events in a JavaFX WebView?
I have created a form with Vaadin Flow (Vaadin version 21) with a save button. This form is then shown in a JavaFX WebView (Version 17.0.1) and now I want to listen to events in the form like save button from JavaFX, so I can update JavaFX parts of the application. I have seen examples like: How to retrieve c…
Getting Error while creating a package in java
while creating a package for my file it giving error message i’m running this command Answer I don’t fully understand what you tried to do there, but you should try notice the “.” is separated from the “calculator” by a space