
Explanation of Solution
Program:
File name: “OutputFormat.java”
//Define the class "OutputFormat"
public class OutputFormat
{
//Define the method "write()"
private static void write(double number, int digitsAfterPoint)
{
//Check the condition
if (number >= 0)
/*True, call the method "writePositive()"*/
writePositive(number, digitsAfterPoint);
//Otherwise
else
{
//Assign the value
double positiveNumber = -number;
//Print statement
System.out.print('-');
//Call the method "writePositive()"
writePositive(positiveNumber, digitsAfterPoint);
}
}
//Define the method "writePositive()"
private static void writePositive(double number,
int digitsAfterPoint)
{
/*Call the method "Math.pow()" to move a decimal point*/
int mover = (int)(Math.pow(10, digitsAfterPoint));
//Declare the variable
int allWhole;
/*Call the method "Math.round()" to round the decimal point */
allWhole = (int)(Math.round(number*mover));
//Calculate the value of before decimal point
int beforePoint = allWhole/mover;
//Calculate the value of after decimal point
int afterPoint = allWhole%mover;
//Print the value of before point
System.out.print(beforePoint);
//Print the dot
System.out.print('.');
//Call the method "writeFraction()"
writeFraction(afterPoint, digitsAfterPoint);
}
//Define the method "writeFraction()"
private static void writeFraction(int afterPoint,
int digitsAfterPoint)
{
//Variable initialization
int n = 1;
//Check the condition
while (n < digitsAfterPoint)
{
//Check the condition
if (afterPoint < Math...

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Chapter 6 Solutions
Java: An Introduction to Problem Solving and Programming plus MyProgrammingLab with Pearson eText -- Access Card Package (7th Edition)
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