java中如何使用FileInputStream读取文件呢?

FileInputStream简介

FileInputStream简介:
     FileInputStream是字节流类
     用于从文件读取字节

FileInputStream示例

package com.java265.io;
 
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
 
public class ReadFileExample {
 
	public static void main(String[] args) {
 
		File file = new File("D:/test.log");
		FileInputStream fis = null;
 
		try {
			fis = new FileInputStream(file);
 
			System.out.println("文件总尺寸(in bytes):"
					+ fis.available());
 
			int content;
			while ((content = fis.read()) != -1) {
				//文件中信息转换为char显示
				System.out.print((char) content);
			}
 
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				if (fis != null)
					fis.close();
			} catch (IOException ex) {
				ex.printStackTrace();
			}
		}
	}
}