CODEWITHSUNDEEP
javaandroidstring-formattingdecimalformat
vipin agrahari
vipin agrahari

Reputation: 2901

Formatting Floating point numbers in android Java

I want to format a floating number into a String in following pattern

X.XX -> when there is only 1 digit before decimal then 2 decimal precision

XX.XX -> when there are 2 digits before decimal then 2 decimal precision

XXX.X -> when there are 3 digits before decimal then 1 decimal precision

XXXX.. -> when there are 4 or more digits before decimal then no decimal points should be displayed

How to do this in Java?

Upvotes: 0

Views: 1819

Answers (2)

Mirjalol Bahodirov
Mirjalol Bahodirov

Reputation: 2521

Assume you have float f number

float f;
int a = (int) f;
String res = null;
if (a<100) res = String.format("%.2f");
else if (a<1000) res = String.format("%.1f");
else res = String.valueOf(a);

Upvotes: 0

Deepak Bhatia
Deepak Bhatia

Reputation: 6276

Just simple code using Decimal Format can be helpful

float f=  24.56f;//Replace with your float number
    int i = (int)f;
    if(i<100)
        System.out.println(new DecimalFormat("#.##").format(f));//This functions will round the last bits also i.e. greater then 4 will increase the number preceding also 
    else if( i < 1000)
        System.out.println(new DecimalFormat("#.#").format(f));
    else 
        System.out.println(new DecimalFormat("#").format(f));

Upvotes: 1

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