Question

convert int to string

Asked by: aussie_guy_nik

what is the best way to convert int to string in java?

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Asked On
2002-04-02 at 06:10:26ID20284041
Tags

string

,

int

,

java

Topic

Java Programming Language

Participating Experts
9
Points
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Comments
14

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Answers

 

by: cheekycjPosted on 2002-04-02 at 06:17:54ID: 6912899

Assuming i is your int var:
Integer.toString(i);

HTH,
CJ

 

by: pkwanPosted on 2002-04-02 at 06:19:04ID: 6912906

Simple way.

int your_integer;
String int_str = new String(your_integer);

 

by: saxabooPosted on 2002-04-02 at 06:19:39ID: 6912909

int i = 567;
String s = Integer.toString(i);

-S

 

by: bazarnyPosted on 2002-04-02 at 06:23:28ID: 6912922


I prefer String.valueOf(i).
Shortest way is ""+i

 

by: 0xDEADBEEFPosted on 2002-04-02 at 06:30:46ID: 6912951

int i = 29331;
String s = String.valueOf(i);

 

by: 0xDEADBEEFPosted on 2002-04-02 at 06:33:20ID: 6912957

Now that is what you get when you jam ur internet connection. Everybody's faster than you ;-)

 

by: sunilvirusPosted on 2002-04-02 at 07:54:08ID: 6913149

if your purpose is to print the integer you can directly write(assuming i as int)
System.out.println("the number is "+i);

but if you really want to convert it to string you write
String s=new String(Integer.toString(i));

 

by: cheekycjPosted on 2002-04-02 at 11:25:51ID: 6913756

Integer.toString(i) should return a new string.. there is no need to instantiate a new String object.  AFAIK, Strings are immutable, right?

I guess I had the fastest internet connection ;-)

CJ

 

by: shyamkumarreddyPosted on 2002-04-02 at 21:10:09ID: 6914996

Yes CJ is right.
Strings are not immutable.

In all the cases specified above have to return a String object right.

Say Integer.toString(i) or String.valueOf(). What is the difference then.
Do anybody find difference in this.

Shyam

 

by: 0xDEADBEEFPosted on 2002-04-02 at 23:40:15ID: 6915252

None actually. That is, Integer.toString(int) is slightly faster. String.valueof(int) looks like this:

public string valueOf(int i){
  return Integer.toString(i, 10);
}

where Integer.toString(int, int) checks if 10 is greater than Character.MAX_RADIX or lower than Character.MIN_RADIX (it usually isn't ;) ), checks whether 10 equals 10 (it usually does...) and delegates to Integer.toString(int):

public String toString(int i, int radix){
 
  if (radix < Character.MIN_RADIX || radix >Character.MAX_RADIX)
  radix = 10;

  /* Use the faster version */
  if (radix == 10) {
    return toString(i);
  }

  //...

}

This is taken from java/lang/String.java and java/lang/Integer.java included in the src.zip file that comes with the JDK.

 

by: cheekycjPosted on 2002-04-03 at 09:31:39ID: 6915605

aussie_guy_nik: any feedback.. I am pretty sure you have gotten a solution :-)

 

by: m_onkey_boyPosted on 2002-04-03 at 12:32:40ID: 6916176

One note:

do not use "" + i. This will work, but it is about 15 times slower than Integer.toString(i).

 

by: vogenPosted on 2002-04-08 at 09:12:22ID: 6925675

the best way to convert integer to string is using
toString() method of INTEGER Class
you can have a look methods of INTEGER Class in API documents.

where you can see this method:
public static String toString(int i)


kool!! mate

 

by: cheekycjPosted on 2002-04-16 at 06:51:56ID: 6944905

Thanx for the "A"

20120131-EE-VQP-002

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