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| 6. 3. 4. 从控制台输入Tokenizing流 |
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A StreamTokenizer object can recognize the following kinds of tokens: |
- Numbers:
- Strings:
- Words:
- Comments:
- Whitespace
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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.StreamTokenizer;
public class MainClass {
public static void main(String[] av) throws IOException {
StreamTokenizer tf = new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));
String s = null;
int i;
while ((i = tf.nextToken()) != StreamTokenizer.TT_EOF) {
switch (i) {
case StreamTokenizer.TT_EOF:
System.out.println("End of file");
break;
case StreamTokenizer.TT_EOL:
System.out.println("End of line");
break;
case StreamTokenizer.TT_NUMBER:
System.out.println("Number " + tf.nval);
break;
case StreamTokenizer.TT_WORD:
System.out.println("Word, length " + tf.sval.length() + "->" + tf.sval);
break;
default:
System.out.println("What is it? i = " + i);
}
}
}
}
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