java

Question 1

The program uses import java.util.Scanner;

Answer 1

for access to the Scanner class.

Question 2

Scanner inSS = null;

Answer 2

declares a Scanner object.

Question 3

The statement inSS = new Scanner(userInfo);

Answer 3

assigns the associated input stream with a copy of userInfo. Then, the program can extract data from the scanner inSS using the family of next() methods (e.g., next(), nextInt(), nextDouble(), etc.).

Question 4

A common use of string streams is

Answer 4

to process user input line-by-line.

Question 5

inSS = new Scanner(lineString);

Answer 5

uses the Scanner’s constructor to initialize the stream’s buffer to the String lineString.

Question 6

output string stream

Answer 6

can be created that is associated with a string rather than with the screen (standard output)

Question 7

An output string stream is created using both

Answer 7

1) the StringWriter
import java.io.StringWriter;
2) PrintWriter classes
import java.io.PrintWriter;

Question 8

The StringWriter class provides

Answer 8

a character stream that allows a programmer to output characters

Question 9

The PrintWriter class is

Answer 9

a wrapper class that augments(الزيادات) character streams, such as StringWriter, with print() and println() methods that allow a programmer to output various data types

Question 10

To create a PrintWriter object,

Answer 10

the program must first create a StringWriter, passing the StringWriter object to the constructor for the PrintWriter.

Question 11

PrintWriter object provides

Answer 11

the print() and println() methods for writing to the stream,

Question 12

StringWriter object provides

Answer 12

the toString() method for getting the resulting String

Question 13

userInput = scnr.nextLine();
inSS = new Scanner(userInput);
userMonth = inSS.next();
userDate =inSS.nextInt();
userYear = inSS.nextInt();

Answer 13

read

Question 14

output formatting

Answer 14

programmer can adjust the way that a program’s output appears

Question 15

the standard output stream System.out provides the methods

Answer 15

1- printf() and
2- format()

Question 16

format string

Answer 16

specifies the format of the text to print along with any number of placeholders for printing numeric values.

Question 17

The placeholders are known as

Answer 17

format specifiers

Question 18

format specifier

Answer 18

specifies the type of value to print in its place

Question 20

sub-specifier

Answer 20

provides formatting options for a format specifier and are included between the % and format specifier character.