How do I formate in Java ?

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How do I formate in Java ??

Such as setw () in C++

Posted 30-Jul-12 19:23pm

Fawzeya Rashed

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TorstenH. · Answer 1 · 2012-07-30T19:47:00

Solution 1

NumberFormat is what you are searching for:

Formatting in Java[^]

Posted 30-Jul-12 19:47pm

TorstenH.

pasztorpisti · Answer 2 · 2012-07-31T02:22:00

I usually use the static method String.format() for that. If you are familiar with the C printf() you can use this immediately because it works the same way.
Example:
String formatted = String.format("name: %-20s age: %10d", nameString, ageInt);

In the above example the width of name will be at least 20 characters and the width of age will be 10 characters, padded with spaces if needed. The '-' character means that if the width of nameString is less than 20 characters then we want to aling it to the left side.

EDIT: Just tried out that you can use %s for any type, java performs the conversion to string. Still, you might want to use %d or %f if you want for example zero prefix padding for integers %09d or want to specify the precision for floats: %10.3f