Java class inside the gradle build file fails - groovy

Question

leftShift is deprecated in Gradle now.
I am trying to add a java class initialization inside the gradle build file like below:
task javaClassInGradleTask {
doLast {
class Myclass {
public void message() {
System.out.println("this is message from java class");
}
}
Myclass testObject = new Myclass();
testObject.message();
}
}
and I am trying to run the file:
gradle javaClassInGradleTask
My error result is below
FAILURE: Build failed with an exception.
* Where:
Build file '/Users/folder/build.gradle' line: 3
What went wrong:
Could not compile build file '/Users/folder/build.gradle'.
startup failed:
build file '/Users/folder/build.gradle': 3: Class definition not expected here. Please define the class at an appropriate place or perhaps try using a block/Closure instead. at line: 3 column: 2. File: BuildScript # line 3, column 2.
class Myclass {
^
1 error
Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
Get more help at https://help.gradle.org
BUILD FAILED in 0s
But when I try to add the class using leftShift it works well.
Any idea to add class inside the gradle file?

Answer 1

It doesn't work for both doLast and <<. Try:
task javaClassInGradleTask {
doLast {
Myclass testObject = new Myclass()
testObject.message();
}
}
class Myclass {
public void message() {
System.out.println("this is message from java class");
}
}