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JAVA文件操作類,方便讀寫小文件

2013-11-23 18:51:26  來源: Java核心技術 

  package cnedudlutwisdom;

  import javaio*;

  import javautil*;

  public class FileAccess {

  public static String readAllText(String fileName) throws IOException {

  StringBuffer sb = new StringBuffer();

  char[] buf = new char[];

  BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(fileName)));

  while(brread(buf) != ) {

  sbappend(buf);

  }

  return sbtoString();

  }

  public static String readAllText(String fileName String encode) throws IOException {

  StringBuffer sb = new StringBuffer();

  char[] buf = new char[];

  BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(fileName) encode));

  while(brread(buf) != ) {

  sbappend(buf);

  }

  return sbtoString();

  }

  public static String[] readAllLines(String fileName) throws IOException {

  ArrayList<String> lines = new ArrayList<String>();

  String s;

  BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(fileName)));

  while ((s = brreadLine()) != null)

  linesadd(s);

  brclose();

  return linestoArray(new String[]{});

  }

  public static String[] readAllLines(String fileName String encode) throws IOException {

  ArrayList<String> lines = new ArrayList<String>();

  String s;

  BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(fileName) encode));

  while ((s = brreadLine()) != null)

  linesadd(s);

  brclose();

  return linestoArray(new String[]{});

  }

  public static void writeAllText(String fileName String text) throws FileNotFoundException {

  PrintWriter pw = new PrintWriter(new FileOutputStream(fileName));

  pwprint(text);

  pwflush();

  pwclose();

  }

  public static void writeAllText(String fileName String encode String text) throws FileNotFoundException UnsupportedEncodingException {

  PrintWriter pw = new PrintWriter(new OutputStreamWriter(new FileOutputStream(fileName) encode));

  pwprint(text);

  pwflush();

  pwclose();

  }

  public static void writeAllLines(String fileName String[] lines) throws FileNotFoundException {

  PrintWriter pw = new PrintWriter(new FileOutputStream(fileName));

  for(String s : lines)

  pwprintln(s);

  pwflush();

  pwclose();

  }

  public static void writeAllLines(String fileName String encode String[] lines) throws FileNotFoundException UnsupportedEncodingException {

  PrintWriter pw = new PrintWriter(new OutputStreamWriter(new FileOutputStream(fileName) encode));

  for(String s : lines)

  pwprintln(s);

  pwflush();

  pwclose();

  }

  public static void writeObject(String fileName Serializable ob) throws IOException {

  ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(fileName));

  ooswriteObject(ob);

  oosflush();

  oosclose();

  }

  public static Object readObject(String fileName) throws IOException ClassNotFoundException {

  ObjectInputStream ois = new ObjectInputStream(new FileInputStream(fileName));

  Object ob = oisreadObject();

  oisclose();

  return ob;

  }

  }


From:http://tw.wingwit.com/Article/program/Java/hx/201311/25872.html
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