NoSuchMethodError in Java — How to Fix (2026) | Tutorials Logic

What is This Error?

The NoSuchMethodError is thrown when the JVM tries to call a method that doesn't exist in the loaded class. This typically happens due to JAR version conflicts — the code was compiled against one version of a library but a different (incompatible) version is on the classpath at runtime.

Error Message:
java.lang.NoSuchMethodError: org.apache.commons.lang3.StringUtils.isBlank(Ljava/lang/CharSequence;)Z

Common Causes

JAR version conflict — compiled with v2.0 but running with v1.0
Multiple versions of the same library on the classpath
Method was added in a newer version of the library
Method was removed or renamed in a library update
Stale compiled .class files from an older version

Quick Fix (TL;DR)

Quick Solution

# Check for conflicting dependencies
mvn dependency:tree | grep "commons-lang"

# Exclude conflicting transitive dependency
# Then do a clean build
mvn clean install

# Or in Gradle
gradle dependencies | grep "commons-lang"

Common Scenarios & Solutions

Scenario 1: Conflicting Transitive Dependencies (Maven)

Problem

<!-- Your code uses commons-lang3 3.12 -->
<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-lang3</artifactId>
    <version>3.12.0</version>
</dependency>

<!-- But some-library pulls in commons-lang3 3.1 (older!) -->
<dependency>
    <groupId>com.example</groupId>
    <artifactId>some-library</artifactId>
    <version>1.0</version>
    <!-- Transitively brings commons-lang3:3.1 -->
</dependency>

Solution

<!-- Exclude the old version from the transitive dependency -->
<dependency>
    <groupId>com.example</groupId>
    <artifactId>some-library</artifactId>
    <version>1.0</version>
    <exclusions>
        <exclusion>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
        </exclusion>
    </exclusions>
</dependency>

<!-- Or use dependencyManagement to force a version -->
<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.12.0</version>
        </dependency>
    </dependencies>
</dependencyManagement>

Scenario 2: Gradle Dependency Resolution

Solution

// build.gradle — force specific version
configurations.all {
    resolutionStrategy {
        force 'org.apache.commons:commons-lang3:3.12.0'
    }
}

// Or exclude from specific dependency
implementation('com.example:some-library:1.0') {
    exclude group: 'org.apache.commons', module: 'commons-lang3'
}

Scenario 3: Stale Build Artifacts

Solution

# Maven clean build
mvn clean install

# Gradle clean build
./gradlew clean build

# Clear local Maven repository cache for the problematic artifact
rm -rf ~/.m2/repository/org/apache/commons/commons-lang3/

Best Practices to Avoid This Error

Use dependency management - Maven dependencyManagement or Gradle resolutionStrategy
Run mvn dependency:tree regularly - Check for version conflicts
Do clean builds after dependency changes - Avoid stale artifacts
Use BOM (Bill of Materials) - Spring Boot BOM manages compatible versions
Keep dependencies up to date - Use Dependabot or Renovate
Test after upgrading libraries - Catch binary incompatibilities early
Use OWASP dependency check - Identifies vulnerable and conflicting dependencies

Related Errors

Key Takeaways

NoSuchMethodError occurs when a method exists at compile time but not at runtime
Usually caused by JAR version conflicts — different versions on compile vs runtime classpath
Use mvn dependency:tree to identify conflicting transitive dependencies
Use Maven exclusions or dependencyManagement to force a specific version
Always do a clean build after changing dependencies
Use Spring Boot BOM or similar to manage compatible dependency versions