//创建文件	public static void createFile(File filename) {				try {			if(!filename.exists()) {				filename.createNewFile();							}		}catch (Exception e) {			// TODO: handle exception			e.printStackTrace();		}	}	//写入txt 内容不被覆盖 追加写入	public static boolean filechaseWrite(String Content,String filepath) {		boolean flag=false;			try {				FileWriter fw=new FileWriter(filepath,true);				fw.write(Content);				fw.flush();				fw.close();				flag=true;			}catch (Exception e) {				// 			 e.printStackTrace();			}		return flag;	}			//写入txt内容 覆盖原内容	public static boolean writetxtfile(String Content,String filepath) {		boolean flag=false;		try {			//写入的txt文档的路径			PrintWriter pw=new PrintWriter(filepath);			//写入的内容			pw.write(Content);			pw.flush();			pw.close();			flag=true;		}catch (Exception e) {			e.printStackTrace();		}		return flag;	}		//读取txt内容	public static String readtxtFile(File file) {		String sResult="";		try {			InputStreamReader reader=new InputStreamReader(new FileInputStream(file),"gbk");			BufferedReader br=new BufferedReader(reader);			String s=null;			while((s=br.readLine())!=null) {				sResult+=s;				System.out.println(s);			}		}catch (Exception e) {			e.printStackTrace();		}		return sResult;	}