Eclipse Gradle Project - Classpath issue - ClassNotFoundException - eclipse

Question

I am running the below code in a gradle project in Eclipse.
public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello World");
}
}
I am getting ClassNotFoundException for this. The class runs fine in a maven project. Maven's .classpath file looks like this.
<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" path="src/main/java"
including="**/*.java"/>
<classpathentry kind="output" path="target/classes"/>
<classpathentry kind="con"
path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
</classpath>
This is Gradle's .classpath file
<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" output="bin/main"
path="src/main/java">
<attributes>
<attribute name="gradle_scope" value="main"/>
<attribute name="gradle_used_by_scope"
value="main,test,intTest"/>
</attributes>
</classpathentry>
<classpathentry kind="con"
path="org.eclipse.jdt.launching.JRE_CONTAINER/
org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/
JavaSE-11/"/>
<classpathentry kind="con"
path="org.eclipse.buildship.core.gradleclasspathcontainer"/>
<classpathentry kind="output" path="bin/default"/>
</classpath>
Is there anything I need to add to build.gradle or make changes to .classpath file to make it work?