Add json jar to your classpath
or use java -classpath json.jar ClassName
Or add this to your maven pom.xml depedencies:
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20090211</version>
</dependency>
java - JSONObject ClassNotFoundException - Stack Overflow
java - How to import org.json in maven using dependency - Stack Overflow
org.json JAR provisioning - Stack Overflow
java - Maven + Spring Boot: Found multiple occurrences of org.json.JSONObject on the class path: - Stack Overflow
Add json jar to your classpath
or use java -classpath json.jar ClassName
Or add this to your maven pom.xml depedencies:
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20090211</version>
</dependency>
As of today (15th July 2020), you need to use latest maven repository as per below:
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20200518</version>
</dependency>
For any new version in the future, you can check it here:
- https://mvnrepository.com/artifact/org.json/json
Then simply replace 20200518 with latest new version value.
Have you considered using Maven? for instance, if you wanted a JAR to pars JSON you could just include...
http://mvnrepository.com/artifact/org.codehaus.jackson/jackson-core-asl/1.9.6
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.9.6</version>
</dependency>
in a pom.xml, this will give you the jar for JSON.
Or better yet, use the org.json one...
http://mvnrepository.com/artifact/org.json/json
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20090211</version>
</dependency>
I downloaded a jar from here: http://code.google.com/p/org-json-java/downloads/detail?name=org.json-20120521.jar&can=2&q=
Add under
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
The following exclusion:
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>com.vaadin.external.google</groupId>
<artifactId>android-json</artifactId>
</exclusion>
</exclusions>
Similarly, for Gradle projects:
testCompile("org.springframework.boot:spring-boot-starter-test") {
exclude group: "com.vaadin.external.google", module:"android-json"
}
Background:
org.json works great, but has a license clause that some people don't like ("The Software shall be used for Good, not Evil."). So Vaadin wanted to use the library, but couldn't be sure they wouldn't use it for evil someday. Instead, they re-implemented the interface, published android-json and used it as a drop in replacement for org.json. Others began to use android-json as well so that they too would not be bound by the requirement of not using their software for evil.
This is a fine solution, except that when the two libraries are on the classpath, they collide.
Solution:
If you get this error from conflicting transitive dependencies, then your best bet is to exclude either Vaadin's android-json library (brought in by Spring), or exclude the org.json library (brought in by another dependency). Vaadin's version is meant to be an identical implementation, but there are subtle differences.
If you're using org.json in your code and it is conflicting with Spring's Vaadin dependency, then I would recommend trying open-json. It's a port of Vaadin's re-implementation of org.json, but they changed the packages so you won't have any conflicts with org.json:json or com.vaadin.external.google:android-json
https://github.com/openjson/openjson
Add gradle dependency:
implementation('com.github.openjson:openjson:1.0.12')
Or in Maven:
<dependency>
<groupId>com.github.openjson</groupId>
<artifactId>openjson</artifactId>
<version>1.0.12</version>
</dependency>
Then update any imports that were being used by org.json classes.
I'm going to start by saying I'm a complete novice in Java. I've started computer science recently and I've got a project where I have to create a project to represent a server using sockets. The server will has to function as a control a library's book record/register. My professor provided a .json file with the book lists which I have to use.
I tried creating the project on VS Code, but after following these steps:
Downloaded the library from the Maven Repository.
Created a lib folder in your project's root directory and move the json-20230303.jar file to this folder.
My code couldn't import the library and this error appeared every time I tried to use the library:
"src\Gerenciador.java:2: error: package org.json does not exist import org.json.JSONArray;"
After a while I thought it would be easier to import the library on the Ide Eclipse, but after creating the project and adding it via the Build Path option, it still didn't work. Even though the library appeared in the Libraries section in the Java Build Path.
This error: "The type org.json.JSONObject is not accessible" keeps appearing.
I don't know how to fix the problem. I think I'm calling on the library wrong, but I don't know how I should do it. If there is any information missing, let me know and I'll provide it, it's my first time asking for help on a programming forum.