private void jMenuItem4ActionPerformed(java.awt.event.ActionEvent evt) {
		File[] files = choseFiles();
		if (files.length == 0)
			return;
		
		for(File f : files){
			if(f.getName().substring(f.getName().indexOf(".")+1).equals("log")){
				ArrayList<Log> tmpList = FileAction.getLogListFromFile(f);
				ArrayList<Log> newList = new ArrayList<Log>();

				int i=0,j=0;
				while(i<lList.size() || j<tmpList.size()){
					if(i == lList.size()){
						newList.add(0,tmpList.get(j));
						j++;
						continue;
					}
					if(j == tmpList.size()){
						newList.add(0,lList.get(i));
						i++;
						continue;
					}
					if(lList.get(i).olderThan(tmpList.get(j))){
						newList.add(0,lList.get(i));
						i++;
					}else {
						newList.add(0,tmpList.get(j));
						j++;
					}
				}
				lList = newList;
			}
		}
		try {
			FileAction.saveLogList(lList);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		loadData();
	}