StreamTokenizer類quoteChar()方法 (StreamTokenizer Class quoteChar() method)

• quoteChar() method is available in java.io package.

  quoteChar()方法在java.io包中可用。

• quoteChar() method denotes that matching pairs of this character delimiter, string constants in this StreamTokenizer. When nextToken() method encounters a string constant, ttype field value is set to the string delimiter and the sval field is set to the content of this string.

  quoteChar()方法表示與此字符定界符(此StreamTokenizer中的字符串常量)的匹配對。 當nextToken()方法遇到字符串常量時，會將ttype字段值設置為字符串定界符，并將sval字段設置為該字符串的內容。

• When a string quote character is encountered then a string is recognized, made of all characters after, the string quote character up to the next occurrence of that similar string quote char or line exit, EOF. Escape sequences "\n", "\t" is recognized and changed to single characters as the string is parsed.

  當遇到字符串引號字符時，將識別由字符串引號字符組成的字符串，該字符串由其后的所有字符組成，直到下一次出現該相似的字符串引號char或行出口EOF。 解析字符串時，轉義序列“ \ n”，“ \ t”被識別并更改為單個字符。

• quoteChar() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  quoteChar()方法是一種非靜態(tài)方法，只能通過類對象訪問，如果嘗試使用類名訪問該方法，則會收到錯誤消息。

• quoteChar() method does not throw an exception at the time of quote character.

  quoteChar()方法在引號字符時不會引發(fā)異常。

Syntax:

句法：

public void quoteChar(int character);

Parameter(s):

參數：

• int character – represents the character.

  int字符 –表示字符。

Return value:

返回值：

The return type of the method is void, it returns nothing.

該方法的返回類型為void ，不返回任何內容。

Example:

例：

// Java program to demonstrate the example // of void quoteChar(int character) method of StreamTokenizerimport java.io.*;public class QuoteChar {public static void main(String[] args) {String str = "Hi, This is \n a mathematical expression :\n " +" 2 * 4 = 8 " + "8 + 5 = 13";try {// Instantiates FileOutputStream and ObjectOutputStream FileOutputStream fos_stm = new FileOutputStream("C:\\Users\\Preeti Jain\\Desktop\\programs\\includehelp.txt");ObjectOutputStream obj_out_stm = new ObjectOutputStream(fos_stm);// By using writeUTF() method is to// write the given string in the fileobj_out_stm.writeUTF(str);obj_out_stm.flush();// Instantiates FileOutputStream and ObjectOutputStream ObjectInputStream obj_in_stm = new ObjectInputStream(new FileInputStream("C:\\Users\\Preeti Jain\\Desktop\\programs\\includehelp.txt"));// Instantiates StreamTokenizer and ReaderReader reader = new BufferedReader(new InputStreamReader(obj_in_stm));StreamTokenizer st = new StreamTokenizer(reader);// By using quoteChar() method is to// represent the given char '8' as// quote charst.quoteChar('8');// Here, we are considering initially // file is not emptyboolean end_of_file = false;while (!end_of_file) {// By using nextToken() method is to// parse the next token from the streamint token = st.nextToken();switch (token) {case StreamTokenizer.TT_EOF:System.out.println("End of File Found");end_of_file = true;break;case StreamTokenizer.TT_EOL:System.out.println("End of Line Found");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 + " Found.");}}} catch (Exception ex) {ex.printStackTrace();}} }

Output

輸出量

@ Found. word: Hi , Found. word: This word: is word: a word: mathematical word: expression : Found. number: 2.0 * Found. number: 4.0 = Found. 8 Found. + Found. number: 5.0 = Found. number: 13.0 End of File Found

翻譯自: https://www.includehelp.com/java/streamtokenizer-quotechar-method-with-example.aspx

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