long value with 0 on left

Question

Why this behavior happens?

long value = 123450;
System.out.println(\"value: \" + value); 

value: 123450

 

long         


        

Answer 1

That's the way java represent an octal literal. Take a look at this:

http://download.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html

If what you want is to print something with zeros in the left you need to use DecimalFormat format method.

http://download.oracle.com/javase/6/docs/api/java/text/DecimalFormat.html

In that case you do this:

long value = 123450;
DecimalFormat df = new DecimalFormat("0");
System.out.println("value: " + df.format(value));