gcc的组建

				import java.io.*;				import java.util.zip.*;								class PR13024 {				    void isZipOrJarArchive(File file) throws IOException {				        ZipFile zipFile = null;								        try {				            zipFile = new ZipFile(file);				        } finally {				            if (zipFile != null) {				                try {				                    zipFile.close();				                } catch (IOException ignored) {}				            }				        }				    }				}