Console Input and Output - Java - page 87

For example, suppose you create a Scanner object as follows:
Scanner keyboard2 = new Scanner(System.in);
You can change the delimiter for the object keyboard2 to "##" as follows:
keyboard2.useDelimiter("##");
After this invocation of the useDelimiter method, "##" will be the only input delim-
iter for the input object keyboard2 . Note that whitespace will no longer be a delimiter
for keyboard input done with keyboard2 . For example, suppose the user enters the fol-
lowing keyboard input:
one two##three##
The following code would read the two strings "one two" and "three" and make
them the values of the variables word1 and word2 :
String word1, word2;
word1 = keyboard2.next();
word2 = keyboard2.next();
This is illustrated in Display 2.10. Note that you can have two different objects of the
class Scanner with different delimiters in the same program.
Note that no whitespace characters, not even line breaks, serve as an input delimiter
for keyboard2 once this change is made to keyboard2 .
Self-Test Exercises
15. Suppose your code creates an object of the class Scanner named keyboard (as
described in this chapter). Write code to change the delimiter for keyboard to a
comma followed by a blank.
16. Continue with the object keyboard from Self-Test Exercise 15. Consider the fol-
lowing input:
one,two three, four, five
What values will the following code assign to the variables word1 and word2 ?
String word1 = keyboard.next();
String word2 = keyboard.next();