Handling File in Eclipse Plugin

* Add Dependenceis in MANIFEST.MF

- MANIFEST.MF > Dependencies > Add > org.eclipse.core.resources

  IWorkspace ws = ResourcesPlugin.getWorkspace(); 
  IWorkspaceRoot root = ws.getRoot();   
  IProject[] projects = root.getProjects();

  //ws.toString:org.eclipse.core.internal.resources.Worksapce@**
  //root.toString : R

  IProject project = projects[0];
  IFolder tmpDir = null;
  IFile file = null;
    
  if(project.exists()){
    //1. Create in Project not System
    tmpDir = project.getFolder((new Path("tmp")));
    if(!tmpDir.exists()){
      try {
        //2. Create in System
        tmpDir.create(false, true, null);
      }catch (CoreException e) {          
        e.printStackTrace();
      }
    }
    file = tmpDir.getFile(new Path("boo.txt"));
    if(!file.exists()){
      try{        
        String str = "dummy";
        InputStream is = new ByteArrayInputStream(str.getBytes());
        file.create(is, false, null);          
      }catch(CoreException e){
        e.printStackTrace();
      }
    }
    Log.logInfo(file.getLocation().toString());
  }else{
    Log.logInfo("project is NOT exist");
  }

- reference :

-- http://www.atmarkit.co.jp/fjava/rensai3/eclipsepde05/eclipsepde05_1.html

--http://www.masatom.in/pukiwiki/Eclipse/%A5%D7%A5%E9%A5%B0%A5%A4%A5%F3%B3%AB%C8%AF%A4%CETIPS%BD%B8/%A5%EF%A1%BC%A5%AF%A5%B9%A5%DA%A1%BC%A5%B9%A4%CE%A5%EA%A5%BD%A1%BC%A5%B9%A4%F2%BC%E8%A4%EA%B0%B7%A4%A6/