import org.apache.hadoop.eclipse.ErrorMessageDialog; //导入依赖的package包/类
/**
 * Static way to create a JAR package for the given resource and showing a
 * progress bar
 * 
 * @param resource
 * @return
 */
public static File createJarPackage(IResource resource) {

  JarModule jarModule = new JarModule(resource);
  try {
    PlatformUI.getWorkbench().getProgressService().run(false, true,
        jarModule);

  } catch (Exception e) {
    e.printStackTrace();
    return null;
  }

  File jarFile = jarModule.getJarFile();
  if (jarFile == null) {
    ErrorMessageDialog.display("Run on Hadoop",
        "Unable to create or locate the JAR file for the Job");
    return null;
  }

  return jarFile;
}
 

import org.apache.hadoop.eclipse.ErrorMessageDialog; //导入依赖的package包/类
/**
 * Gets a connection to the DFS
 * 
 * @return a connection to the DFS
 * @throws IOException
 */
DistributedFileSystem getDFS() throws IOException {
  if (this.dfs == null) {
    FileSystem fs = location.getDFS();
    if (!(fs instanceof DistributedFileSystem)) {
      ErrorMessageDialog.display("DFS Browser",
          "The DFS Browser cannot browse anything else "
              + "but a Distributed File System!");
      throw new IOException("DFS Browser expects a DistributedFileSystem!");
    }
    this.dfs = (DistributedFileSystem) fs;
  }
  return this.dfs;
}