The
nextInt(radix) method of
java.util.Scanner class scans the next token of the input as a Int. If the translation is successful, the scanner advances past the input that matched. If the parameter radix is not passed, then it behaves similarly as nextInt(radix) where the radix is assumed to be the default radix.
Syntax:
public int nextInt()
Parameters: The function accepts a parameter
radix which is used to interpret the token as a Int value.
Return Value: This function returns the
Int scanned from the input.
Exceptions: The function throws three exceptions as described below:
- InputMismatchException: if the next token does not matches the Integer regular expression, or is out of range
- NoSuchElementException: throws if input is exhausted
- IllegalStateException: throws if this scanner is closed
Below programs illustrate the above function:
Program 1:
Output:
Not found Int value :Gfg
Found Int value :9
Not found Int value :+
Found Int value :6
Not found Int value :=
Not found Int value :12.0
Program 2:
Output:
Not found Int value :Gfg
Found Int value :9
Not found Int value :+
Found Int value :6
Not found Int value :=
Not found Int value :12.0
Program 3: To demonstrate InputMismatchException
Output:
Exception thrown: java.util.InputMismatchException
Program 4: To demonstrate NoSuchElementException
Output:
Not found Int value :Gfg
Exception thrown: java.util.NoSuchElementException
Program 5: To demonstrate IllegalStateException
