java-design-patterns com.iluwatar 1.26.0-SNAPSHOT 4.0.0 double-buffer org.slf4j slf4j-api ch.qos.logback logback-classic org.apache.commons commons-lang3 3.17.0 org.junit.jupiter junit-jupiter-engine test org.apache.maven.plugins maven-assembly-plugin com.iluwatar.doublebuffer.App