Calculating a Minimum and Maximum in Java? -

the first part of exercise calculate test score average. next problem asked me build off problem , calculate minimum , maximum. can me? code far.

 import java.util.scanner;  import java.io.*;  import java.text.decimalformat;   public class hw   {  public static void main ( string[] args )  {     int maxgrade;     int mingrade;     int count=0;     int total=0;     final int sentinel = -1;     int score;      scanner scan = new scanner( system.in);     system.out.println( "to calculate class average, enter each test     score.");     system.out.println( "when finished, enter -1.");      system.out.print( "enter first test score > ");     score = scan.nextint();      while (score != sentinel )     {         total += score;         count ++;          system.out.print("enter next test score > ");         score = scan.nextint();     }     if (count != 0)     {         decimalformat onedecimalplace = new decimalformat("0.0");         system.out.println( "\nthe class average "                  + onedecimalplace.format( (double) (total) / count ));      }     else         system.out.println("\nno grades entered");      }       } 

in while loop, can compare current score maximum , minimum.

while (score != sentinel ) {     total += score;     count ++;     if(score > maxgrade)         maxgrade = score;     if(score < mingrade)         mingrade = score;     system.out.print("enter next test score > ");     score = scan.nextint(); } 

you need set max , min (when declaring them) "opposite" value:

int maxgrade = integer.min_value; int mingrade = integer.max_value;