Java How to Program, Early Objects, 11th Edition

... Programming Error I.3

Not providing a sufficiently large field width to handle a value to be printed can offset other data being printed and produce confusing outputs. Know your data!

Method printf also provides the ability to specify the precision with which data is printed. Precision has different meanings for different types. When used with floating-point conversion characters e and f, the precision is the number of digits that appear after the decimal point. When used with conversion characters g, a or A, the precision is the maximum number of significant digits to be printed. When used with conversion character s, the precision is the maximum number of characters to be written from the string. To use precision, place between the percent sign and the ...