Java读取文件字符串内容

流程

• 调用java.util.*
• 分别创建FileReader、BufferReader、StringBuilder对象
• 当不为空时逐行读取

示例代码

File file = new File(fileName);
		FileReader reader = new FileReader(file);
		BufferedReader bReader = new BufferedReader(reader);
		StringBuilder sb = new StringBuilder();
		String line = "";
		while ((line = bReader.readLine()) != null) {
			...
		}