Java.io.StreamTokenizer.ordinaryChar()方法實例
java.io.StreamTokenizer.ordinaryChar(int ch) 方法指定的字符的參數是“ordinary”這個詞器。它消除了任何特殊意義的字符有一個注釋字符,單詞組成,字符串分隔符,空格或數字字符。當這樣的性格是由解析器遇到,解析器將其視為一個單字符記號,並設置ttype字段的字符值。製作一個行結束字符“普通”可能會乾擾一個StreamTokenizer中的數行的能力。lineno方法可能不再反映在它的行數,例如終止字符的存在。
聲明
以下是java.io.StreamTokenizer.ordinaryChar()方法的聲明
public void ordinaryChar(int ch)
參數
-
ch -- 字符
返回值
這個方法冇有返回值
異常
-
NA
例子
下麵的示例演示java.io.StreamTokenizer.ordinaryChar()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 as an ordinary char st.ordinaryChar(' '); // 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麵的程序,這將產生以下結果:
Word: Hello. Word: This Word: is Word: a Word: text End of Line encountered. Word: that Word: will Word: be Word: split Word: into Word: tokens. Number: 1.0 + encountered. Number: 1.0 = encountered. Number: 2.0 End of File encountered.