I was trying to build a project in Intellij-idea with Maven and got a error saying that
"Cannot resolve method 'combinations' in 'Sets'
The code where the error is showing is here :
public Set<Set<String>> GetCombinationsSet(){
System.out.println("Mapper: Calculating combinations");
ArrayList<String> resources = new ArrayList<>(timeHarMap.keySet());
Set<Set<String>> combinations = Sets.combinations(ImmutableSet.copyOf(resources), 2);
//System.out.println(combinations.toArray().length);
return combinations;
}
The imports im using :
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Sets;
I have guava dependency in the pom.xml, tried putting this dependency but it doesn't work:
<dependency>
<groupId>com.google.common</groupId>
<artifactId>google-collect</artifactId>
<version>0.5</version>
</dependency>
Image with the error when i try to build it :
try this in your pom.xml
<dependency>
<groupId>com.google.common</groupId>
<artifactId>google-collect</artifactId>
<version>1.0</version>
</dependency>
Related
I am getting the saxon-importing error like,
The "import net.sf.saxon.FeatureKeys" cannot be resolved.
How can I add the dependency to resolve the "net.sf.saxon.FeatureKeys" error.
I have already added the given dependency:
<!-- https://mvnrepository.com/artifact/net.sf.saxon/Saxon-HE -->
<dependency>
<groupId>net.sf.saxon</groupId>
<artifactId>Saxon-HE</artifactId>
<version>10.6</version>
</dependency>
Please help me out to resolve this issue.
I think you want import net.sf.saxon.lib.FeatureKeys, see https://www.saxonica.com/html/documentation10/javadoc/net/sf/saxon/lib/FeatureKeys.html
Cannot resolve image:
I am getting the error cannot resolve symbol jsonobject in intellij, shown in the attached image:Cannot resolve image, when I press Alt + Enter it does not give me the option to import class.
import org.json.JSONObject;
Please add this in your pom.xml file
<!-- https://mvnrepository.com/artifact/org.json/json -->
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20190722</version>
</dependency>
Are you developing Java project through maven. If so approach shared by Alexandros Kourtis should work. If you are not using Maven, download the org.json library and reference it in the project.
For Gradle developers add this to to your build.gradle dependencies:
// https://mvnrepository.com/artifact/org.json/json
implementation 'org.json:json:20220924'
I want to try the example of dynamic update statement on this tutorial link : http://www.mybatis.org/mybatis-dynamic-sql/docs/update.html. I saw that it needs the import org.mybatis.dynamic.sql.update.render.UpdateStatementProvider; , So i've searched for dependency in the maven central and added below dependency on my pom.xml
<!-- https://mvnrepository.com/artifact/org.mybatis.dynamic-sql/mybatis-dynamic-sql -->
<dependency>
<groupId>org.mybatis.dynamic-sql</groupId>
<artifactId>mybatis-dynamic-sql</artifactId>
<version>1.0.0</version>
</dependency>
Already tried mvn clean install -U on maven build but still The import org.mybatis.dynamic cannot be resolved error always shows. Where can i have the correct maven dependency for this. Or you can suggest me other dynamic update statement approach on mybatis using xml mapper.
I also added the newest version of it and everything worked as expected. I had the problem, that mybatis-spring-boot-starter did not include mybatis-dynamic-sql.
<dependency>
<groupId>org.mybatis.dynamic-sql</groupId>
<artifactId>mybatis-dynamic-sql</artifactId>
<version>1.3.1</version>
</dependency>
When practicing to realize a "hadoop RPC" sample, I keep getting this error.
According to previous similar questions and answers, I've checked the jar file in my classpath and got hadoop common.jar It shows that the jar file in the classpath contains hadoop.conf.Configuration.class.
And here's the code to build RPCServer:
*package rpc;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.ipc.RPC;
import org.apache.hadoop.ipc.Server;
public class RPCServer implements MyBizable {
public String doSomething(String str) {
return str;
}
public static void main(String[] args) throws Exception {
Server server = new RPC.Builder(new Configuration())
.setProtocol(MyBizable.class)
.setInstance(new RPCServer())
.setBindAddress("***.***.***.***")
.setPort(****)
.build();
server.start();
}
}*
And still this error shows up, anyone knows how to solve it?
Any help will be greatly appreciated! THX in advance!
Are you using Maven ?
if yes then add below dependencies.
<dependency>
<groupId>org.apache.hadoop</groupId>
<artifactId>hadoop-client</artifactId>
<version>${hadoop.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.hadoop</groupId>
<artifactId>hadoop-common</artifactId>
<version>${hadoop.version}</version>
<scope>provided</scope>
</dependency>
I am trying to convert JSON to JAVA object with the use of GSON in MAVEN, I am following a youtube video for guidance - https://www.youtube.com/watch?v=Vqgghm9pWe0 , however theres an error which occurs when in the Main Class the error is - package com.squareup.okhttp3 doesn't exist. The code is below:
Java
package com.codebeasty.json;
import com.squareup.okhttp3.OkHttpClient;
public class Main {
private static OkHttpClient client = new OkHttpClient();
public static void main (String [] args)
{
}
}
I even put in the dependency in pom.xml:
<dependencies>
<dependency>
<groupId>com.squareup.okhttp3</groupId>
<artifactId>okhttp</artifactId>
<version>3.4.2</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.0</version>
</dependency>
</dependencies>
I dont understand why it doesn't recognize the com.squareup. Is there something extra I may need to download? I have downloaded the JAR from this website - http://square.github.io/okhttp/ and also tried building the project with dependencies. Please help :(
Maven repo has latest version 3.4.1. Trying changing version in pom or install downloaded in your local using
mvn install:install-file -Dfile=path/to/okhttp-3.4.2.jar -DgroupId=com.squareup.okhttp3 -DartifactId=okhttp -Dversion=3.4.2 -Dpackaging=jar