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

The length method is called using a String object reference and the dot

operator, as illustrated in lines 21, 24, and 29 of Example 3.6. At lines 21

and 29, the length method is called inside an output statement and the

respective return values from the length method are output. At line 24, we

call the length method for the greeting2 object and assign the return value

to the int variable len. Then at line 25, we output the value of the variable

len. As shown in Figure 3.11, the length of “Hi” is 2, the length of “Hello” is

5, and the length of the empty String is 0.

The toUpperCase and toLowerCase Methods

The toUpperCase method converts all the letters ...