format double java code example

Example 1: java string format .2f

String.format("%.2f", 3.45);

Example 2: java double format

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

Example 3: float format decimal places

num = 1.234
print("{:.2f}".format(num))
>> 1.23

print(f"{num:.2f}")
>> 1.23