Double decimal formatting in Java

One of the way would be using NumberFormat.

NumberFormat formatter = new DecimalFormat("#0.00");     System.out.println(formatter.format(4.0));

Output:

4.00

java formatting double decimal

With Java 8, you can use format method..: -

System.out.format("%.2f", 4.0); // ORSystem.out.printf("%.2f", 4.0);

For most Java versions, you can use DecimalFormat: -

    DecimalFormat formatter = new DecimalFormat("#0.00");    double d = 4.0;    System.out.println(formatter.format(d));

java formatting double decimal

String.format("%.2f", 4.52135);

As per docs:

The locale always used is the one returned by Locale.getDefault().

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