Javaテキストファイルの読み書き

//    
String filePath = "";
// new File("").getAbsolutePath()        
// this.getClass().getResorce("").getPath()           
// this.getClass().getResourceAsStream("")      InputStream。"" /      Sources   ，  /   ./   ，../     
FileInputStream inputStream = new FileInputStream(filePath);            
InputStreamReader inputStreamReader = new InputStreamReader(inputStream);            
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);            
String lineString;            
while ((lineString = bufferedReader.readLine()) != null) {   
	//      
}            
 
           
bufferedReader.close();
inputStreamReader.close();
inputStream.close();

//    
        String filePath = "";
        try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(new FileInputStream(filePath)))) {
            String lineString;
            while ((lineString = bufferedReader.readLine()) != null) {
                //      
            }
        } catch (IOException iOException) {
            iOException.printStackTrace();
        }

//    
String filePath2 = "C:/Users/Administrator/Desktop/result.txt";
File file = new File(filePath2);  
//                  
if(file.exists()){            
    file.delete();            
}            

file.createNewFile();            
FileOutputStream fileOutputStream = new FileOutputStream(filePath2);            
OutputStreamWriter outputStreamWriter = new OutputStreamWriter(fileOutputStream);            
BufferedWriter bufferedWriter = new BufferedWriter(outputStreamWriter);            
//    
bufferedWriter.write(content + "
");
bufferedWriter.close();//     ，           ，          
fileOutputStream.close();