iomethods.java

数据结构与算法Java语言版（美）Adam Drozdek著

import java.io.*;

public class IOmethods {
    public void writeString(String s, RandomAccessFile out) throws IOException {
        for (int i = 0; i < s.length(); i++)
            out.writeChar(s.charAt(i));
    }
    public String readString(int len, RandomAccessFile in) throws IOException {
        String s = "";
        for (int i = 0; i < len; i++)
            s += in.readChar();
        return s;
    }
    public String readLine() throws IOException {
        int ch;
        String s = "";
        while (true) {
            ch = System.in.read();
            if (ch == -1 || (char)ch == '\n') // end of file or end of line;
                 break;
            else if ((char)ch != '\r')        // ignore carriage return;
                 s = s + (char)ch;
        }
        return s;
    }
}