// Fig. 13.9: AssertTest.java
// Uses assert to check that an absolute value is between 0 and 10
// call: java -ea AssertTest -- to enable assertion test

// call: java -ea AssertTest -> assert is checked
// call: java AssertTest     -> assert is not checked
import java.util.Scanner;

public class AssertTest
{
   public static void main( String args[] )
   {
      Scanner input = new Scanner( System.in );
      
      System.out.print( "Enter a number between 0 and 10: " );
      int number = input.nextInt();
      
      // assert that the absolute value is between 0 and 10
      assert ( 0 <= number && number <= 10 ) : "bad number: " + number;
      
      System.out.printf( "You entered %d\n", number );
   } // end main
} // end class AssertTest

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