Various ways to suppress integer.parseint error handling

August 12, 2020 by Billy Manning


Here are some easy ways to troubleshoot integer.parseint error handling.

The simplest solution for converting a string to an integer in Java is to use the parseInt method of the Integer class. parseInt converts the string to int and throws a NumberFormatException if the string cannot be converted to int.




The simplest solution for converting a string to an integer in Java is to use the parseInt method of the integer class. parseInt converts string to int and throws NumberFormatException if the string cannot be converted to one Enter int . Here are two quick examples.

1) Basic Java Conversion Example For "String To Int"

If you ignore the exception that might be thrown, all you need to convert string to int is a line of code:

If the string represented by the variable myString is a valid integer such as "1", "200", etc., it is converted to int Java . If for some reason this fails, the conversion throws a NumberFormatException. So your code would have to be a little longer to take this into account, as shown in the following example.

2) Complete "String To Int" Example

Here is the source code for the complete sample program that demonstrates the process of converting Java String to int and handles possible NumberFormatException :


How do I convert a string to an int?

We can convert string in Java to integer using integer. parseInt () method. To convert a string to an integer, we can use an integer. valueOf (), which returns an instance of the Integer class.

As you can see in this example, the Integer.parseInt (s.trim ()) method is used to convert the string s to an integer i < / code> to this line of code:

When parseInt () method can be used?

The typical technique used to convert an integer string in Java is parseInt (). How do I use parseInt () method in Java? There are two variants of this method: public static int parseInt (String s) throws NumberFormatException - This function parses the string argument as a signed decimal number.

If the conversion attempt fails - for example, if you are trying to convert a Java string fred to an integer - the integer parseInt method throws a NumberFormatException which you have to process in a try / catch block.

integer.parseint error handling

In this example, I don't need to use the trim () method of the String class, but you should use it in a real program. That's why I showed it here.

Related Notes


Hope this example was helpful for Java String for int . If you have any questions or comments, just leave a note in the Comments section below.







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