如何使用java代码读取文件的内容呢?

java中读取文件内容，我们通常使用IO流中的方法
   如:
     使用FileReader,FileInputStream读取文件内容 

  
try {
    File file = new File("java265.txt");
    FileReader fileReader = new FileReader(file);
    BufferedReader bufferedReader = new BufferedReader(fileReader);
 
    String line;
    while ((line = bufferedReader.readLine()) != null) {
        System.out.println(line);
    }
 
    bufferedReader.close();
} catch (IOException e) {
    e.printStackTrace();
}

使用FileInputStream
读取文件内容示例

try {
    File file = new File("java265.txt");
    FileInputStream fileInputStream = new FileInputStream(file);
    InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream);
    BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
 
    String line;
    while ((line = bufferedReader.readLine()) != null) {
        System.out.println(line);
    }
 
    bufferedReader.close();
    inputStreamReader.close();
    fileInputStream.close();
} catch (IOException e) {
    e.printStackTrace();
}