Java 6 Illuminated: An Active Learning Approach, 2nd Edition

operator is intended to be a String concatenation operator because its

operands are a String and an int.

Some useful methods of the String class are summarized in Table 3.4.

The length Method

The length method returns the number of characters in a String. Some-

times, the number of characters in a user ID is limited, for example, to

eight, and this method is useful to ensure that the length of the ID does not

exceed the limit.

3.7 The String Class 117

TABLE 3.4 String Methods

String Class Method Summary

Return value Method name and argument list

int length( )

returns the length of the String

String toUpperCase( )

converts all letters in the String to upper ...