javaɾ³ýÎļþºÍ¸ÄÎļþÃû

public static void externalSort (File file ,int k)throws IOException,FileNotFoundException{

    int m = 0;
FileReader in1 = new FileReader(file);
FileReader in2 = new FileReader(file);
File data = new File("F:\\temp2.txt");
        File data3= new File ("F:\\temp.txt");
        int n = 10000000;
      external (in1, in2, data, k, n);

data.renameTo(new File("F:\\data_dst.txt"));
data3.deleteOnExit();


System.out.println("ÅÅÐòÒÑÍê³É");
}
}
ÎÒдÁËÒ»¸ö³ÌÐò£¬´ó¸ÅÊÇÕâÑù×Ó£¬³ÌÐòµÄ×îºóÒªÇó°ÑÆäÖÐÒ»¸öÎļþ¸ÄÃû£¬ÁíÒ»¸öÎļþɾ³ý¡£ÎÒµ÷ÓÃÁËÉÏÃæµÄ·½·¨£¬¸ÄÃû»¹Å¼¶ûʵÏÖ¹ý£¬É¾³ý´ÓδʵÏÖ¹ý¡£Çë¸ßÊÖÖ¸µãÒ»ÏÂÎÊÌâ³öÔÚÄÄÀÈç¹û²»ÄÜÕâÑù×öµÄ»°¸ÃÈçºÎ¸Ä½ø£¿Íò·Ö¸Ðл¡£

---

Java code:
boolean success = (new File("filename")).delete();
if (!success) {
// Deletion failed
}


Java code:
// File (or directory) with old name
File file = new File("oldname");

// File (or directory) with new name
File file2 = new File("newname");

// Rename file (or directory