How to Convert a String to an int in Java?

In Java, converting a String to an int is done using methods from the Integer class. The methods used for this conversion are Integer.parseInt() and Integer.valueOf().

Example:

The Integer.parseInt() is a commonly used method to convert a string to an integer in Java. This method converts a numeric string to an int by interpreting each character as a digit. If the string contains any non-numeric characters, a NumberFormatException will be thrown.

Java

// Java Program to convert String to int
public class StringToInt {
  
    public static void main(String[] args) {
      
        String s = "123";

        // Convert string to int using parseInt
        int n = Integer.parseInt(s);

        System.out.println("The integer value is: " + n);
    }
}

Output

The integer value is: 123

How to Convert a String to an int in Java?

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