Deny int change 012345 to 5349

Question

Possible duplicate:
Integer with leading zeros

The program that I am coding requires that I label the item with accession number 012345 and store it in the int variable.

This is a stripped down example of what I'm doing:

int test = 012345; System.out.println(test); 

it prints like:

 5349 

How do I print it as 012345, not 5349?

EDIT: I injected this into the constructor parameter for the custom class that I am initializing. Then I use the method to return the current number, then print it in the terminal window.

Answer 1

You get the wrong number because when you add zero to an integer literal, Java interprets that number as an octal (i.e. base-8) constant. If you want to add a leading zero, use

 int test = 12345; System.out.println("0"+test); 

You can also use the generated output functionality using the %06d , for example:

 System.out.format("%06d", num); 

6 means use six digits; "0" means "pad with zeros, if necessary."

Answer 2

As already mentioned, an int value with an initial zero is considered an octal value. If you don't need to have the test as an int, why not make it a string? how

 String test= new String("012345"); 

And if you want to use int for the test, you can not add 0, but just use a number and add 0 during printing.

In case you are interested in how you find how much initial zero should be added, you can do this as follows:

 int lengthOfItemID=6; int test=12345; String test1=new String("000000"+test); System.out.println(test1.substring(test1.length()-lengthOfItemID)); 

Pardon syntax errors were the years I last worked with java.

Answer 3

You can get the correct result using Integer.parseInt . This will make your string in decimal string. (found here ). The JAVA API here states that it takes a string and returns a decimal signature.