icu4j-charset-tests icu4j-charset icu4j-core icu4j-shared icu4j-test-framework org.eclipse.jdt.core.javabuilder org.eclipse.ui.externaltools.ExternalToolBuilder full,incremental, LaunchConfigHandle <project>/.externalToolBuilders/copy-charset-test-data.launch org.eclipse.jdt.core.javanature