Format Printing

We can format output involving fixed and variable components. Usually we align strings to the left and numebrs to the right.

==

In the printf a number of values may follow the format string. These values are used up by % placeholders in the format string.

The format string is

"Country: %-18s GDP: %,20d\n"

%-18s

the minus in -18 means align left,

the 18 means 18 characters are to be used, the s is for string.

%,20d

the comma means include , separator every three digits, the 20

means use 20 characters and align right, d is for decimal.

\n::This starts a new line.

.

static void doLine(String name, long gdp) { System.out.printf("Country: %-18s GDP: %,20d\n", name, gdp); }

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test text