Opening a gradle multi-module Java Project is very slow in vs code

[sirpan89]

I Have a Gradle multi-module project, the structure looks like the one below. my gradle command in Windows terminal takes hardly 2 mins to build the entire project . but opening the same folder in vscode takes more than 30 mins showing "Importing Gradle project(s) - 70%" or "Synchronizing projects" or "Importing root project - 70% Refreshing" After import, I still see compilation errors. can anyone please help

Folder Structure
services
+--- servicea
| +--- core
| +--- host-integration
| +--- mapper-mobile
| --- mapper-web
+--- serviceb Module
| +--- core
| +--- host-integration
| +--- mapper-mobile
| --- mapper-web

output of gradlew projects

Root project 'services' - Service
+--- Project ':servicea' -servicea Module
| +--- Project ':servicea:servicea-core' -servicea Core
| +--- Project ':servicea:servicea-host-integration' -servicea Module Host Integration
| +--- Project ':servicea:servicea-mapper-mobile' -servicea Module Mobile Mappers
| --- Project ':servicea:servicea-mapper-web' -servicea Module Web Mappers
+--- Project ':serviceb' - serviceb Module
| +--- Project ':serviceb:serviceb-core' - serviceb Module Core
| +--- Project ':serviceb:serviceb-host-integration' - serviceb Module Core
| +--- Project ':serviceb:serviceb-mapper-mobile' - serviceb Module Mobile Mappers
| --- Project ':serviceb:serviceb-mapper-web' - serviceb Module Web Mappers

i have attempted to open the project in vscode after running below set of commands, nothing helped as well

attempt 1:
gradlew clean
gradlew eclipseClean

attempt 2:
gradlew clean
gradlew eclipseClean
gradlew

attempt 3:
gradlew clean
gradlew eclipseClean
gradlew eclipse

none of the attempts improved the performance, also I have tried the fixes mentioned in

• Very slow update/refresh with Gradle multi project including non Java project with large number of files redhat-developer/vscode-java#1362
• I'm stuck at Initialize Workspace - 31% Refreshing '/jdt.ls-java-project'. redhat-developer/vscode-java#3357 - until I apply this change my java project name was like core_ , core__ , host-integration_ , host-integration__ and so on.

NOTE: I have total 17 services similar to servicea, serviceb etc..

Environment:

• VS Code Version:1.89.1
• Extension Version:
• Language Support for Java(TM) by Red Hat : v1.31.20240
• gradle for Java : v3.13.5
• Extension Pack for Java : v0.26.0
• JDK Type & Version: 21
• OS Type & Version:

.project

<?xml version="1.0" encoding="UTF-8"?> <projectDescription> <name>servicea</name> <comment>Service A</comment> <projects> </projects> <buildSpec> <buildCommand> <name>org.eclipse.jdt.core.javabuilder</name> <arguments> </arguments> </buildCommand> <buildCommand> <name>org.eclipse.buildship.core.gradleprojectbuilder</name> <arguments> </arguments> </buildCommand> </buildSpec> <natures> <nature>org.eclipse.jdt.core.javanature</nature> <nature>org.eclipse.buildship.core.gradleprojectnature</nature> </natures> <filteredResources> <filter> <id>1</id> <name></name> <type>10</type> <matcher> <id>org.eclipse.core.resources.regexFilterMatcher</id> <arguments>node_modules|.git</arguments> </matcher> </filter> <filter> <id>2</id> <name></name> <type>10</type> <matcher> <id>org.eclipse.ui.ide.multiFilter</id> <arguments>1.0-name-matches-false-false-node_modules</arguments> </matcher> </filter> <filter> <id>3</id> <name></name> <type>10</type> <matcher> <id>org.eclipse.ui.ide.multiFilter</id> <arguments>1.0-name-matches-false-false-build</arguments> </matcher> </filter> <filter> <id>4</id> <name></name> <type>10</type> <matcher> <id>org.eclipse.ui.ide.multiFilter</id> <arguments>1.0-name-matches-false-false-javadoc</arguments> </matcher> </filter> <filter> <id>1716307971023</id> <name></name> <type>30</type> <matcher> <id>org.eclipse.core.resources.regexFilterMatcher</id> <arguments>node_modules|\.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments> </matcher> </filter> </filteredResources> </projectDescription>

[pmingkr]

This issue happens to me randomly. and it shuts down my task.

I Have a Gradle multi-module project, the structure looks like the one below. my gradle command in Windows terminal takes hardly 2 mins to build the entire project . but opening the same folder in vscode takes more than 30 mins showing "Importing Gradle project(s) - 70%" or "Synchronizing projects" or "Importing root project - 70% Refreshing" After import, I still see compilation errors. can anyone please help

Folder Structure services +--- servicea | +--- core | +--- host-integration | +--- mapper-mobile | --- mapper-web +--- serviceb Module | +--- core | +--- host-integration | +--- mapper-mobile | --- mapper-web

output of gradlew projects

Root project 'services' - Service +--- Project ':servicea' -servicea Module | +--- Project ':servicea:servicea-core' -servicea Core | +--- Project ':servicea:servicea-host-integration' -servicea Module Host Integration | +--- Project ':servicea:servicea-mapper-mobile' -servicea Module Mobile Mappers | --- Project ':servicea:servicea-mapper-web' -servicea Module Web Mappers +--- Project ':serviceb' - serviceb Module | +--- Project ':serviceb:serviceb-core' - serviceb Module Core | +--- Project ':serviceb:serviceb-host-integration' - serviceb Module Core | +--- Project ':serviceb:serviceb-mapper-mobile' - serviceb Module Mobile Mappers | --- Project ':serviceb:serviceb-mapper-web' - serviceb Module Web Mappers

i have attempted to open the project in vscode after running below set of commands, nothing helped as well

attempt 1: gradlew clean gradlew eclipseClean

attempt 2: gradlew clean gradlew eclipseClean gradlew

attempt 3: gradlew clean gradlew eclipseClean gradlew eclipse

none of the attempts improved the performance, also I have tried the fixes mentioned in

• Very slow update/refresh with Gradle multi project including non Java project with large number of files redhat-developer/vscode-java#1362
• I'm stuck at Initialize Workspace - 31% Refreshing '/jdt.ls-java-project'. redhat-developer/vscode-java#3357 - until I apply this change my java project name was like core_ , core__ , host-integration_ , host-integration__ and so on.

NOTE: I have total 17 services similar to servicea, serviceb etc..

Environment:

• VS Code Version:1.89.1
• Extension Version:
• Language Support for Java(TM) by Red Hat : v1.31.20240
• gradle for Java : v3.13.5
• Extension Pack for Java : v0.26.0
• JDK Type & Version: 21
• OS Type & Version:

.project

<?xml version="1.0" encoding="UTF-8"?> <projectDescription> <name>servicea</name> <comment>Service A</comment> <projects> </projects> <buildSpec> <buildCommand> <name>org.eclipse.jdt.core.javabuilder</name> <arguments> </arguments> </buildCommand> <buildCommand> <name>org.eclipse.buildship.core.gradleprojectbuilder</name> <arguments> </arguments> </buildCommand> </buildSpec> <natures> <nature>org.eclipse.jdt.core.javanature</nature> <nature>org.eclipse.buildship.core.gradleprojectnature</nature> </natures> <filteredResources> <filter> <id>1</id> <name></name> <type>10</type> <matcher> <id>org.eclipse.core.resources.regexFilterMatcher</id> <arguments>node_modules|.git</arguments> </matcher> </filter> <filter> <id>2</id> <name></name> <type>10</type> <matcher> <id>org.eclipse.ui.ide.multiFilter</id> <arguments>1.0-name-matches-false-false-node_modules</arguments> </matcher> </filter> <filter> <id>3</id> <name></name> <type>10</type> <matcher> <id>org.eclipse.ui.ide.multiFilter</id> <arguments>1.0-name-matches-false-false-build</arguments> </matcher> </filter> <filter> <id>4</id> <name></name> <type>10</type> <matcher> <id>org.eclipse.ui.ide.multiFilter</id> <arguments>1.0-name-matches-false-false-javadoc</arguments> </matcher> </filter> <filter> <id>1716307971023</id> <name></name> <type>30</type> <matcher> <id>org.eclipse.core.resources.regexFilterMatcher</id> <arguments>node_modules|\.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments> </matcher> </filter> </filteredResources> </projectDescription>

[user100861]

I also met this problem, and my work is stuck at 26% Refreshing. I didn't use gradle at all, my project is using maven to import dependencies. That's my pom.xml:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.4.5</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>org.proj</groupId>
    <artifactId>LaboratoryManagement</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>LaboratoryManagement</name>
    <description>LaboratoryManagement</description>
    <url/>
    <licenses>
        <license/>
    </licenses>
    <developers>
        <developer/>
    </developers>
    <scm>
        <connection/>
        <developerConnection/>
        <tag/>
        <url/>
    </scm>
    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web-services</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.session</groupId>
            <artifactId>spring-session-core</artifactId>
        </dependency>
        <!-- https://mvnrepository.com/artifact/jakarta.persistence/jakarta.persistence-api -->
        <dependency>
            <groupId>jakarta.persistence</groupId>
            <artifactId>jakarta.persistence-api</artifactId>
            <version>3.2.0</version>
        </dependency>
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt-impl</artifactId>
            <version>0.12.5</version>
        </dependency>
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt-jackson</artifactId>
            <version>0.12.6</version>
        </dependency>
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt-api</artifactId>
            <version>0.12.6</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework.security/spring-security-core -->
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-core</artifactId>
            <version>6.4.5</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.auth0/java-jwt -->
        <dependency>
            <groupId>com.auth0</groupId>
            <artifactId>java-jwt</artifactId>
            <version>4.5.0</version>
        </dependency>
        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <scope>runtime</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/jakarta.servlet/jakarta.servlet-api -->
        <dependency>
            <groupId>jakarta.servlet</groupId>
            <artifactId>jakarta.servlet-api</artifactId>
            <version>6.1.0</version>
            <scope>provided</scope>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.mybatis.spring.boot/mybatis-spring-boot-starter -->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>3.0.4</version>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
    </dependencies>

    <build>
        <resources>

            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                    <include>**/*.properties</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.xml</include>
                    <include>**/*.properties</include>
                </includes>
                <filtering>true</filtering>
            </resource>
        </resources>

        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <annotationProcessorPaths>
                        <path>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </path>
                    </annotationProcessorPaths>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

I found a solution: rename the Java project directory. But that will need user reopen all files he/she is doing work on.

[github-actions]

Hi @sirpan89, I'm an AI Support assistant here to help with your issue. While the team reviews your request, I wanted to provide some possible tips and documentation that might help you in the meantime.

Suggestions to Improve Gradle Import Performance

• Enable Gradle ‘configure on demand’ and offline mode

// settings.json
"java.import.gradle.arguments": ["--configure-on-demand"],
"java.import.gradle.offline.enabled": true

• Increase Java Language Server heap and use G1GC

"java.jdt.ls.vmargs": "-noverify -Xms1G -Xmx2G -XX:+UseG1GC -XX:+UseStringDeduplication"

• Exclude build artifacts from indexing and search

"files.exclude": {
  "**/.gradle": true,
  "**/build": true
},
"search.exclude": {
  "**/.gradle": true,
  "**/build": true
},
"java.project.excludedPaths": ["**/.gradle", "**/build"]

• Disable auto-build and CodeLens if not needed

"java.autobuild.enabled": false,
"java.referencesCodeLens.enabled": false,
"java.implementationCodeLens.enabled": false

• Upgrade to the latest VS Code and Java extensions

High-confidence reference:

• Performance degrades with Gradle projects (includes full list of tuning options)
  https://github.com/redhat-developer/vscode-java/wiki/Gradle-Support#performance-degrades-with-gradle-project

Other references with low confidence

• After opening a project…parsing delay (~3 min) – points to the same Gradle performance wiki
  After opening a project and stopping operation for 3 hours, opening a class needs to wait about 3 minutes for the syntax to be successfully parsed redhat-developer/vscode-java#2081 (comment)

• Slow workspace load for 40+ Java projects – shows slow rg.exe scans
  The system become extremely slow when loading a huge Java workspace redhat-developer/vscode-java#1236

• Slow Java 9 module import in jdt.ls (eclipse-jdtls issue)
  Gradle, JigSaw & Language Support For Java Issue eclipse-jdtls/eclipse.jdt.ls#957

The team will respond to your issue shortly. I hope these suggestions are helpful in the meantime. If this comment helped you, please give it a 👍. If the suggestion was not helpful or incorrect, please give it a 👎. Your feedback helps us improve!