I’m trying to get some json data using OkHttp and can’t figure out why when i try logging the response.body().toString() what i get is Results:﹕ com.squareup.okhttp.Call$RealResponseBody@41c16aa8 I don’t know what i’m doing wrong here. How do i get the response string? Answer Just in c…
Java finding minimum value from for loop
I was having some problem when trying to find the minimum distance and from the minimum distance, I then plot two circles onto the map. Currently I am getting 15, 3, 15, 14 as DIST but I could not get the minDist as it is not printed out. Any ideas? Thanks in advance. Answer You probably want: and initialize …
How to stop Java Scanner from accepting input
So, I am working on a quiz taking program that works from the command line and the quizzes have time limits. What I want to do, is to stop the quiz right when the user’s time is up even if they’re in the middle of answering a question. I am using Java’s Scanner to get the user’s input,…
java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Boolean, using Table.addRow() with Jackcess
I am trying to write some values in a MS Access database using Jackcess. My values are originally represented using String. The code I am using is the following: int nColumns = 0; // get table from …
How to count number of rows using JPA?
I try to count number of rows using JPA.I want to use where clause however I can’t. How can I set where clause forexample where age=”45″. Thanks in advance. Answer Use ParameterExpression. Note: Untested. Reference.
In Java, which is faster – String.contains(“some text”) or Regex that looks for same text?
As the title says, just looking for a string to match a client finishing sending data over a socket, so I might be looking for something like {“Message” : “END”} in a JSON string for example. A the most the strings will be a few hundred chars long. Answer They’re both fast enough…
Flyway Migration with java
I learnt flywaydb migration with java works with JDBC connection and also spring support through SpringTemplate, but flyway doesn’t work with DAOs. for tables/entities with more relationships,it makes life much easier to do migration with DAO’s rather than sql. is there a solution or work-around t…
No Dialect mapping for JDBC type: 1111
I’m working on a Spring JPA Application, using MySQL as database. I ensured that all spring-jpa libraries, hibernate and mysql-connector-java is loaded. I’m running a mysql 5 instance. Here is a excerpt of my application.properties file: When executing an integration test, spring startsup properly…
Class file has wrong version 52.0, should be 50.0
I’m trying to compile my project in IntelliJ idea. I’m using a class in an external jar file and on compilation receiving the following error. I understand that it’s saying the jar file was compiled with a newer Java version than that which IntelliJ is using. My question is how do I make the…
increasing code performance of codility
today i heard about this website called codility where a user can give various programming test to check their code’s performance. When I started, they presented me with this sample test, Task description A small frog wants to get to the other side of the road. The frog is currently located at position …