初学者,关于BufferedReader输入流的问题

56 38
A
7  8
请问,我要读取这三行数据,用BuffereReader,应该怎么写

如果是 56 38 A  7  8 写法我会，如果多行是否要建多个BufferedReader对象？？？？？

8 个解决方案

#1

readLine()

#2

import java.io.*;
import java.util.StringTokenizer;
public class Test11
{
    public static void main(String[] args) throws IOException,FileNotFoundException
    {
        int x;
        char ch;
        int y;
        int x1,x2,x3,x4;
        String str;
        StringTokenizer tokenizer;
        BufferedReader inFile=new BufferedReader(new FileReader("E:\\abcd\\inData.txt"));
        PrintWriter outFile=new PrintWriter(new FileWriter("E:\\abcd\\outData.txt"));

        tokenizer=new StringTokenizer(inFile.readLine());

        x1=Integer.parseInt(tokenizer.nextToken());
        x2=Integer.parseInt(tokenizer.nextToken());
        str=tokenizer.nextToken();
        ch=str.charAt(0);
        x3=Integer.parseInt(tokenizer.nextToken());
        x4=Integer.parseInt(tokenizer.nextToken());
        x=x1 + x2;
        ch=(char)(ch+1);
        y=x3 * x4;
        outFile.println("The sum of 56 and 38 ="+x+
        "\n"+"The character that comes after A in the Unicode set is "+ch+
        "\n"+"The product of 7 and 8="+y);
        outFile.close();
        }
}
我就是用readLine()不行,弹出例外.

#3

import java.io.*;
import java.util.*;
public class test
{
public static void main(String[] args) throws IOException,ClassNotFoundException{
BufferedInputStream in=new BufferedInputStream(new FileInputStream("x:\xx.txt"));
int x1,x2,x3,x4,x5;
char c;
x1=in.readInt();
x2=in.readInt();
x3=in.readInt();
x4=in.readInt();
x5=in.readInt();
c=(char)x3;
//读出来了吧。
}
}

#4

运行的时候好象BufferedInputStream in=new BufferedInputStream(new FileInputStream("x:\xx.txt"));这一句有错误也!大哥问题出在那啊?谢谢赐教!

#5

x:\xx.txt 要输入真确的路径
比如你要读取c盘下的read.txt文件，那么就是：
BufferedInputStream in=new BufferedInputStream(new FileInputStream("c:\\read.txt"));

#6

#7

import java.io.*;
import java.util.*;
public class test
{
public static void main(String[] args) throws IOException,ClassNotFoundException{
BufferedReader in=new BufferedReader(new FileReader("x:\\xx\\xx\\x\\xx\\xx\\111.txt"));
String x1,x2,x3,x4,x5;
char c;
x1=in.readLine();
x2=in.readLine();
x3=in.readLine();
x4=in.readLine();
x5=in.readLine();
System.out.println(x3);
//c=(char)x3;
//读出来了吧。
}
}

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#8

还有个问题,readLine()与readInt()用法上有什么区别吗?
readLine()是读取一行!返回String字符串
readInt()? 不是很明白!...知道是返回int类型

#1