import java.io.*; File libDir = new File( basedir, "target/dependency" ); String[] expectedFiles = { "maven-model-2.0.6.jar", }; for ( String expectedFile : expectedFiles ) { File file = new File( libDir, expectedFile ); System.out.println( "Checking for existence of " + file ); if ( !file.isFile() ) { throw new Exception( "Missing file " + file ); } } return true;