tag:blogger.com,1999:blog-8712770457197348465.post7311223172221439136..comments2024-03-28T02:47:19.159-07:00Comments on Javarevisited: How to Convert String to Integer to String in Java with Examplejavin paulhttp://www.blogger.com/profile/15028902221295732276noreply@blogger.comBlogger33125tag:blogger.com,1999:blog-8712770457197348465.post-26081982761726608392020-07-25T22:35:18.038-07:002020-07-25T22:35:18.038-07:00Hello Ahmed, sorry, didn't get the context of ...Hello Ahmed, sorry, didn't get the context of your comment, can you describe please?javin paulhttps://www.blogger.com/profile/15028902221295732276noreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-75319988175122601082020-07-21T13:51:48.619-07:002020-07-21T13:51:48.619-07:002.238494 is a float not a int or Integer ,can'...2.238494 is a float not a int or Integer ,can't convertbconvert directly ata greater value tosmall value need downcasting expoucilyAhmedhttps://www.blogger.com/profile/17202691460028343852noreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-26415545636322879532017-10-10T18:23:14.383-07:002017-10-10T18:23:14.383-07:00@Anonymous, there is no direct way to convert Stri...@Anonymous, there is no direct way to convert String array to integer array, you need to loop though the array and convert each element to integer and then store into an integer array, that's it. javin paulhttps://www.blogger.com/profile/15028902221295732276noreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-10879703479636886672017-10-10T18:22:12.906-07:002017-10-10T18:22:12.906-07:00Your most welcome Liam :-)Your most welcome Liam :-)javin paulhttps://www.blogger.com/profile/15028902221295732276noreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-9357378687070391522017-10-10T13:28:05.332-07:002017-10-10T13:28:05.332-07:00Thanks, Javin. That was very helpful. I just neede...Thanks, Javin. That was very helpful. I just needed to know how to parse a string into an int but your explanation about the exception made me put it in a try catch statement with NumberFormatException e and it works perfectly. So thanks again, Javin.Liam Melaughnoreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-12829540058472044142017-03-13T05:22:20.905-07:002017-03-13T05:22:20.905-07:00There is error of exception processing occurred wh...There is error of exception processing occurred when converting string array to integer array....<br />Then how to convert string array to integer array...<br />Please help me out if anyone knows...<br />Thanks in advance....Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-84113010982878556342017-02-13T05:01:14.718-08:002017-02-13T05:01:14.718-08:00In your last example I m not able to under stand m...In your last example I m not able to under stand meaning of %dshimhttps://www.blogger.com/profile/05249312180618506157noreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-45334118837454678892016-12-13T09:34:58.772-08:002016-12-13T09:34:58.772-08:00if string is like this "as3 fsd3 s1d d2"...if string is like this "as3 fsd3 s1d d2" and i want sum of the number i.e 3+3+1+2=9.then what is the solution for it?Anonymoushttps://www.blogger.com/profile/04495329494754827307noreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-53622211508352125982016-06-28T21:51:25.138-07:002016-06-28T21:51:25.138-07:00There is some difference between an int and an int...There is some difference between an int and an integer, former is a primitive data type which can never be null while later is a wrapper object which can be null. The default value for int is zero while for Integer it is null. So, if you are looking to convert a String to an int in Java, you need to use the parseInt() method as described in <a href="http://java67.blogspot.com/2013/03/Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-24311605715258329582016-03-23T05:51:29.175-07:002016-03-23T05:51:29.175-07:00entire string in the form of string and interger ...entire string in the form of string and interger how to split it in the form of split Anonymoushttps://www.blogger.com/profile/06271068141323035824noreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-16300263118944530742016-02-06T01:13:06.748-08:002016-02-06T01:13:06.748-08:00@Ankit, even though valueOf() calls parseInt() int...@Ankit, even though valueOf() calls parseInt() internally, it's better to use the valueOf() method because it caches the frequently used numbers e.g. from -128 to 127. So, if you already parsed "127" then valueOf() will return cached value but parseInt will always parse it.javin paulhttps://www.blogger.com/profile/15028902221295732276noreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-71733019303134989662016-02-03T23:26:47.986-08:002016-02-03T23:26:47.986-08:00ParseInt is better to call as Value of is internal...ParseInt is better to call as Value of is internally calling parse IntAnkit Vermahttps://www.blogger.com/profile/00336691163422131376noreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-4711676325914555802016-01-18T09:33:33.136-08:002016-01-18T09:33:33.136-08:00if i have string like "1+2+3" and i wan...if i have string like "1+2+3" and i want convert into number having ans 3+2+1=7 .so final Ans would be 7.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-60128213775072145532016-01-04T21:23:23.630-08:002016-01-04T21:23:23.630-08:00if i have String stringNo = "10Y"
then ...if i have String stringNo = "10Y"<br /><br />then how can i convert it in int intNo=10<br />('Y' should be added afterwards)<br /><br />then again set String stringFinal="10Y"Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-385655201910003742015-10-07T07:44:17.344-07:002015-10-07T07:44:17.344-07:00Check whether String contains only digit and parse...Check whether String contains only digit and parse the value .<br /><br />public class ConvertStringToInt {<br /> public static void main(String[] args) {<br /><br /> String str = "6789";<br /> boolean validDigit=convertStringToInt(str);<br /> <br /> if(validDigit){<br /> int digit=Integer.parseInt(str);<br /> System.out.println(digit);<br /> }else{<br /> System.out.println(&Anonymoushttps://www.blogger.com/profile/07822540441341408251noreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-38277342614114832112014-11-23T23:17:22.043-08:002014-11-23T23:17:22.043-08:00how to convert int to String in Java? you read it ...how to convert int to String in Java? you read it write, I am interested in primitive int not Integer object.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-50021799500234553712014-09-11T21:18:18.694-07:002014-09-11T21:18:18.694-07:00is there are safe way to convert various kinds of ...is there are safe way to convert various kinds of numeric String values to integer or int in Java? currently I am loading data from a file and one of the field which supposed to be number contains different kinds of String values which is not int e.g. empty string "", number in exponential format e.g. 3.9535733E6, -7723 and simple 2.38494. When I use Integer.valueOf() to convert, I getAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-33382019440369618922014-06-30T15:35:51.509-07:002014-06-30T15:35:51.509-07:00Another way to convert from String to int is "...Another way to convert from String to int is "int i = new Integer(String).intValue();"Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-60871526250695796742014-05-07T03:04:35.798-07:002014-05-07T03:04:35.798-07:00From JDK 1.5 allows you to convert like Integer i ...From JDK 1.5 allows you to convert like Integer i = new Integer("000000081");Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-15240483910728652272013-03-04T01:16:06.480-08:002013-03-04T01:16:06.480-08:00What is the best way to convert String to int prim...What is the best way to convert String to int primitive variable in Java? Best in terms of ease of use, performance and without any gotcha.sureshnoreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-37363028927166077292013-02-19T19:00:58.996-08:002013-02-19T19:00:58.996-08:00Does this method works for negative integer value ...Does this method works for negative integer value as well? How about handling Integer overflow ?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-26343529393227207662013-02-15T00:10:42.022-08:002013-02-15T00:10:42.022-08:00Integer.parseInt() is best way to convert numeric ...Integer.parseInt() is best way to convert numeric String to integer. It takes care of negative integers as well.Riyanoreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-73563471704038779612012-06-18T02:18:46.547-07:002012-06-18T02:18:46.547-07:00Always use Integer.valueOf() to convert String to ...Always use <b>Integer.valueOf()</b> to convert String to Integer object, that's it.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-14417613765518034742012-04-22T19:33:58.078-07:002012-04-22T19:33:58.078-07:00@Sujata, Converting to int or Integer is different...@Sujata, Converting to int or Integer is different as former is primitive type while later is an Object. Though with auto-boxing in Java 5 you can convert int to Integer automatically but still you need to convert String to int or String to Integer before auto boxing can take place.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8712770457197348465.post-4365982477946945812012-04-09T02:34:57.247-07:002012-04-09T02:34:57.247-07:00What is difference on converting String to int and...What is difference on converting String to int and String to Integer ? to me both looks same because auto-boxing will convert int to Integer automatically. By the way you should use String.valueOf() to convert String to Int or Integer because its a static factory method and can cache frequently used Integers. since Integers are immutable object caching and reusing them will prevent from creating Sujatanoreply@blogger.com