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package com.cug.datastream;import java.io.IOException;import java.io.RandomAccessFile;public class RandomAccessFileDemo { public static void main(String[] args) throws IOException { writer(); reader(); } public static void reader() throws IOException{ RandomAccessFile raf = new RandomAccessFile("r.txt", "r"); System.out.println(raf.getFilePointer());//0 System.out.println(raf.readInt()+":"+raf.getFilePointer());//12:4 System.out.println(raf.readChar()+":"+raf.getFilePointer());//c:6 System.out.println(raf.readUTF()+":"+raf.getFilePointer());//中国:14 raf.close(); } public static void writer() throws IOException{ RandomAccessFile raf = new RandomAccessFile("r.txt", "rw"); raf.writeInt(12); raf.writeChar('c'); raf.writeUTF("中国"); raf.close(); }}
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