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+install gradle:
+https://linuxhint.com/installing_gradle_ubuntu/
+
+wget -c https://services.gradle.org/distributions/gradle-7.5.1-bin.zip -P /tmp
+sudo unzip -d /opt/gradle /tmp/gradle-7.5.1-bin.zip
+
+create sample application with gradle:
+https://docs.gradle.org/current/samples/sample_building_java_applications.html
+
+