double A= 24.8, B= -92.777, C= 0.009, D= -0.123;
DecimalFormat numform = new DecimalFormat(" 00.00;-00.00"); 
System.out.println( "A = " + numform.format(A) );
System.out.println( "B = " + numform.format(B) );
System.out.println( "C = " + numform.format(C) );
System.out.println( "D = " + numform.format(D) );

Answer:

A =  24.80
B = -92.78
C =  00.01
D = -00.12

Financial Numbers

In financial output, negative numbers are sometimes enclosed in () without a minus sign. Here is a fragment that does that:

double firstQ= 456.78, secondQ= -23.06, thirdQ= 46.3, fourthQ= -102.45;

DecimalFormat numform = new DecimalFormat(" 000.00 ;(000.00)"); 

System.out.println( "First  Quarter = " + numform.format(firstQ) );
System.out.println( "Second Quarter = " + numform.format(secondQ) );
System.out.println( "Third  Quarter = " + numform.format(thirdQ) );
System.out.println( "Fourth Quarter = " + numform.format(fourthQ) );

The fragment outputs:

First  Quarter =  456.78
Second Quarter = (023.06)
Third  Quarter =  046.30
Fourth Quarter = (102.45)

Notice that the number format pattern is the same in both subpatterns, 000.00. The pattern for positive numbers includes two spaces to match the two parentheses output for negative numbers. The negativePattern contains characters not in the positivePattern and so the minus sign is suppressed.

QUESTION 12:

What does the following fragment write?

double A= 0.1, B= -0.1;

DecimalFormat numform = new DecimalFormat(" 000.000;-000.000"); 

System.out.println( "A = " + numform.format(A) );
System.out.println( "B = " + numform.format(B) );