I have a function that returns void Generic method Implementation of generic interface How can I use void in IRequestHandler<DeleteProductCommand, Void> so that I can map void from iProductService.delete(deleteProductCommand.id); Answer Option 1: Just return null: Option 2: Update the IProductService::d…
Tag: java-7
How to read .rpt files in Java and save it as pdf
I have a .rpt file. I want to read it programatically in java and save it in pdf file. I followed the solution multithread pdf conversion My source code provided below After running my code I am unable to read the .rpt file and my pdf file becomes empty. Please help me out. Answer Finally I get a solution usi…
Can’t run Maven 3.6.3 on JDK7
According to the Maven release history, it should be possible to run any recent version of Maven (at the time of writing anyway) on JDK 7. However, when I try to do so on my Ubuntu 21.04 machine, I get an error: java.lang.UnsupportedClassVersionError: com/google/inject/Module : Unsupported major.minor version…
Can’t figure out why ScriptEngine engine is null in code
This is some of the code I’m running for a MapleStory server. Whenever a script for an event like talking to an NPC is supposed to occur, this script will be run to create a scripting path for whatever script is being called up (NPC, portal, event etc.). I am also using jdk1.7.0_80 This is the bat error…
Caused by: java.lang.NoClassDefFoundError: io/jsonwebtoken/Jwts
i am using jjwt-0.9.1.jar and runtime gives this exception for jersey reset API call. When i use this code using java main() method, its works perfectly but when i call from servlet to that class, the method throws exception. When call servlet to java class method i.e.createJWTToken() gives following exceptio…
Oracle 19c compatibility with jdk7
I would like to know if oracle 19c is compatible with jdk 7. I have found out 2 drivers for oracle 19c ojdbc8 : for jdk8, jdk9 and jdk11 ojdbc10 : for jdk10 and jdk11 I would like to know if there is a way to have oracle 19c with a jdk7, and if yes what is the driver that
javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure java 1.7_45
I have an https web page that I need to access and get some file, I am using Java 1.7_45 and apache httpclient 4.5.1 when I execute the client request I get the error(If I change to Java 8 it works, but I cannot change it to Java 8): I tried everything that I found on the internet as add
Invalid flag -parameters in java 1.7
I have the task to create the spring-boot application using Java 7. So, as usual, I created a template on start.spring.io resource and open him via File -> New -> Project from Existing Sources… When I run with jdk-8, everything works fine, but when I change JDK to version 1.7 (also I change java-v…
Mockito anyListOf() List<List>
I’m using mockito-core:2.8.47 and Java 7 and want to use in a when and verify anyListOf or some other any method. My Problem is, if I just use anyList it says: The method name( int, List < List < String > >) in the type Y is not applicable for the arguments ( int, List < Object > ) How
OpenCSV Avoid using FileWriter and return InputStream
I am using OpenCsv and the new CSVWriter() method takes a Writer as an argument. What I am trying to achieve is that to avoid writing to the file system and instead return an InputStream. I am not sure how to go about this. Not very familiar with Streams also I am using JAVA 7. Is it possible that I