hasNextInt
public boolean hasNextInt(int radix)Returns true if the next token in this scanner's input can be interpreted as an int value in the specified radix using the nextInt() method. The scanner does not advance past any input. 

Parameters:
radix - the radix used to interpret the token as an int value 
Returns:
true if and only if this scanner's next token is a valid int value 
Throws: 
IllegalStateException - if this scanner is closed

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nextInt
public int nextInt()Scans the next token of the input as an int. 
An invocation of this method of the form nextInt() behaves in exactly the same way as the invocation nextInt(radix), where radix is the default radix of this scanner. 


Returns:
the int scanned from the input 
Throws: 
InputMismatchException - if the next token does not match the Integer regular expression, or is out of range 
NoSuchElementException - if input is exhausted 
IllegalStateException - if this scanner is closed