![]() If you have any questions or comments, just leave a note in the Comments section below. I hope this Java String to int example has been helpful. If you want to convert strings to other Java primitive fields, for example, a long, use methods like Long.parseLong(), and so on.If you're interested in converting a String to an Integer object, use the valueOf() method of the Integer class instead of the parseInt() method. ![]() Integer.toString(int i) is used to convert in the other direction, from an int to a Java String.While I’m in this neighborhood, here are a few related notes about the String and Integer classes: In this example, I don’t really need to use the String class trim() method, but in a real-world program you should use it, so that's why I’ve shown it here. If the conversion attempt fails - for instance, if you try to convert the Java String fred to an int - the Integer parseInt method will throw a NumberFormatException, which you should handle in a try/catch block. I have a string with date '10:00 AM ', I need to convert this to a long using Java, I cant use Date because its deprecated and it was not giving me the time correctly. ("NumberFormatException: " + nfe.getMessage()) Īs you can see from this example, the Integer.parseInt(s.trim()) method is used to convert from the string s to the integer i in this line of code: print out the value after the conversion ![]() by using Long.toString(long value) method, by using String.valueOf(long), and by. the String to int conversion happens here There are three main ways to convert a long value to a String in Java e.g. String s = "fred" // use this if you want to test the exception below Here’s the source code for a complete example program that demonstrates the Java String to int conversion process, handling for a possible NumberFormatException: Example 2: A complete “String to int” example If it fails for any reason, the conversion will throw a NumberFormatException, so your code should be a little bit longer to account for this, as shown in the next example. Therefore it seems to be treated as a string. The value of dxorderid is retrieved from a parameter in the URL of the page called. If the String represented by the variable myString is a valid integer like “1”, “200”, and so on, it will be converted to a Java int. String dxorderId request.getParameter ('orderid') long orderid Long.parseLong ( (dxorderId)) It is inside a servlet which is called from a PL/SQL procedure. Ignoring the exception it can throw, all you need to convert a String to int is this one line of code: Example 1: A basic Java “String to int” conversion example For more information, see the following two examples. for int you int i 3423 String str str str.valueOf (i) so how do you go the other way but with long. ParseInt converts the String to an int, and throws a NumberFormatException if the string can’t be converted to an int type. How to convert String to long in Java (10 answers) Closed 7 years ago. The most direct solution to convert a Java string to an integer is to use the parseInt method of the Integer class: Java String/int FAQ: How do I convert a Java String to an int? Solution
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