Java.io.StreamTokenizer.ordinaryChars()方法實例
java.io.StreamTokenizer.ordinaryChars(int low, int hi) 方法指定的範圍內的所有字符C在low <= c <= high「ordinary」這個詞器。請參閱上一個字符爲普通詳細信息,此時要用ordinaryChar方法。
聲明
以下是java.io.StreamTokenizer.ordinaryChars()方法的聲明
public void ordinaryChars(int low, int hi)
參數
low --該範圍的低端
hi -- 範圍的高階
返回值
這個方法沒有返回值
異常
- NA
例子
下面的例子顯示java.io.StreamTokenizer.ordinaryChars()方法的用法。
package com.yiibai; import java.io.*; public class StreamTokenizerDemo { public static void main(String[] args) { String text = "Hello. This is a text
that will be split " + "into tokens. 1+1=2"; try { // create a new file with an ObjectOutputStream FileOutputStream out = new FileOutputStream("test.txt"); ObjectOutputStream oout = new ObjectOutputStream(out); // write something in the file oout.writeUTF(text); oout.flush(); // create an ObjectInputStream for the file we created before ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.txt")); // create a new tokenizer Reader r = new BufferedReader(new InputStreamReader(ois)); StreamTokenizer st = new StreamTokenizer(r); // set chars a to e as ordinary st.ordinaryChars('a', 'e'); // print the stream tokens boolean eof = false; do { int token = st.nextToken(); switch (token) { case StreamTokenizer.TT_EOF: System.out.println("End of File encountered."); eof = true; break; case StreamTokenizer.TT_EOL: System.out.println("End of Line encountered."); break; case StreamTokenizer.TT_WORD: System.out.println("Word: " + st.sval); break; case StreamTokenizer.TT_NUMBER: System.out.println("Number: " + st.nval); break; default: System.out.println((char) token + " encountered."); if (token == '!') { eof = true; } } } while (!eof); } catch (Exception ex) { ex.printStackTrace(); } } }
讓我們編譯和運行上面的程序,這將產生以下結果:
Word: H
e encountered. Word: llo. Word: This Word: is a encountered. Word: t
e encountered. Word: xt Word: th
a encountered. Word: t Word: will
b encountered. e encountered. Word: split Word: into Word: tok
e encountered. Word: ns. Number: 1.0 + encountered. Number: 1.0 = encountered. Number: 2.0 End of File encountered.