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When I'm doing the building the maven project it is throwing the below error. I checked all my code no where \ or \u present in code. While a lot of answers and resources point out errors in / vs , I want to mention that I have no local changes and this repo just works fine for others in my team. It worked fine for me as well before.

java.lang.IllegalArgumentException: Malformed \uxxxx encoding.
    at java.util.Properties.loadConvert (Properties.java:667)
    at java.util.Properties.load0 (Properties.java:456)
    at java.util.Properties.load (Properties.java:408)
    at org.eclipse.aether.internal.impl.TrackingFileManager.read (TrackingFileManager.java:64)
    at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.read (DefaultUpdateCheckManager.java:511)
    at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.checkMetadata (DefaultUpdateCheckManager.java:252)
    at org.eclipse.aether.internal.impl.DefaultMetadataResolver.resolve (DefaultMetadataResolver.java:302)
    at org.eclipse.aether.internal.impl.DefaultMetadataResolver.resolveMetadata (DefaultMetadataResolver.java:181)
    at org.apache.maven.repository.internal.DefaultVersionResolver.resolveVersion (DefaultVersionResolver.java:213)
    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom (DefaultArtifactDescriptorReader.java:204)
    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor (DefaultArtifactDescriptorReader.java:171)
    at org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.resolveCachedArtifactDescriptor (DefaultDependencyCollector.java:541)
    at org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.getArtifactDescriptorResult (DefaultDependencyCollector.java:524)
    at org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency (DefaultDependencyCollector.java:412)
    at org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency (DefaultDependencyCollector.java:365)
    at org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.process (DefaultDependencyCollector.java:352)
    at org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.collectDependencies (DefaultDependencyCollector.java:254)
    at org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies (DefaultRepositorySystem.java:284)
    at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve (DefaultProjectDependenciesResolver.java:169)
    at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies (LifecycleDependencyResolver.java:243)
    at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies (LifecycleDependencyResolver.java:147)
    at org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved (MojoExecutor.java:248)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:202)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)

I have already tried the following:

  1. Reinstalled java on my mac
  2. Reinstalled maven Tried to invalidate
  3. Tried to invalidate cache and restart IntelliJ multiple times.

Can some please help me on this.

Mahesh Yadav
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3 Answers3

3

I found one of my third party library is having property file inside .m2/repository folder.

That property file is causing the issue. So, I fixed the issue by deleting .m2/repository folder and updating the library with proper syntax.

Mahesh Yadav
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0

In your .properties file there should be a path property somewhere. Make sure that you use / and NOT \ for this property.

And if you want to use \ then you have to escape it this way \\.

Renis1235
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0

Put a breakpoint on the line of code: throw new IllegalArgumentException("Malformed \uxxxx encoding.") in Properties.java:667,

build the project in debug mode when the debugger stops at breakpoint, search the stack for the value of the input variable that has the error. it will point to the problematic file that can be deleted/corrected

in my case it was the code in Properties.class:

public synchronized void load(InputStream inStream) throws IOException {
    load0(new LineReader(inStream));
}

In a variable inStream I find a problem filename and delete it. This solved the problem

kulsha slava
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