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Chapter 3: Problem 34

Assume the following declaration exists in a program: string name = "James"; Write a statement that uses syatem.out.printf to display the value of name in a field that is 20 spaces wide.

Short Answer

Expert verified
Answer: Use the following statement to achieve this: ```java System.out.printf("%20s", name); ``` Here, the format specifier "%20s" sets the field width to 20 spaces and properly formats the output for the string variable "name".

Step by step solution

01

Identify the format specifier

The format specifier for the string data type is %s. This will be used in the system.out.printf function to display the value of the "name" variable.
02

Set the width of the field

We are asked to display the value in a field that is 20 spaces wide. To do this, we will include the width (20) just after the % symbol and before the format specifier (s) in the format string.
03

Write the system.out.printf statement

Now that we know the format specifier and width, we will plug them into the system.out.printf function to display the value of the "name" variable in a field that's 20 spaces wide. The statement is: ```java System.out.printf("%20s", name); ``` This will output the value of "name" in a field that's 20 spaces wide, as required.

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