code: /**
   * This file is part of Eclipse Steady.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
   * SPDX-License-Identifier: Apache-2.0
   * SPDX-FileCopyrightText: Copyright (c) 2018-2020 SAP SE or an SAP affiliate company and Eclipse Steady contributors
   */
  package org.eclipse.steady.kb;
  
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.util.Enumeration;
  import java.util.zip.ZipEntry;
  import java.util.zip.ZipFile;
  import org.apache.commons.compress.utils.IOUtils;
  
  public class ZipUtil {
    public static void unzip(String zipPath, String destPathToUnzip) {
      try (java.util.zip.ZipFile zipFile = new ZipFile(zipPath)) {
        Enumeration<? extends ZipEntry> entries = zipFile.entries();
        while (entries.hasMoreElements()) {
          ZipEntry entry = entries.nextElement();
          File entryDestination = new File(destPathToUnzip, entry.getName());
          if (entry.isDirectory()) {
            entryDestination.mkdirs();
          } else {
            entryDestination.getParentFile().mkdirs();
            try (InputStream in = zipFile.getInputStream(entry);
                OutputStream out = new FileOutputStream(entryDestination)) {
              IOUtils.copy(in, out);
            }
          }
        }
      } catch (IOException e) {
        System.out.println("unzip failed " + e.getMessage());
      }
    }
  }
  