What is the parseInt() method?

The parseInt() method is a static method of the Integer class. Two versions of the parseInt() method are defined in the Integer class. Their signatures are given below:

public static int parseInt(String str) throws NumberFormatException
public static int parseInt(String str, int base) throws NumberFormatException

The first form of the parseInt() method returns an integer representation of the number contained in the string argument as a signed decimal integer.

The second form of the parseInt() method returns an integer representation of the number contained in the string arguments by using the specified base.

Both of the methods throw an object of type NumberFormatException in case the string passed as an argument to the method does not contain a parsable int type number.

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