Need to find a max of three numbers in java

Question

Possible Duplicate    Find the max of 3 numbers in Java with different data types  Basic Java        Write a program that uses a scanner to read three integers  positive  displays the biggest number of three   Please complete without using either of the operators  amp  amp  or     These operators will be covered in class shortly  Similarly loops are not required    Some sample run    Please input 3 integers  5 8 3 The max of three is  8  Please input 3 integers  5 3 1 The max of three is 5  import java lang Math  import java util Scanner  public class max       public static void main String   args            Scanner keyboard   new Scanner System in           System out println  Please input 3 integers              String x   keyboard nextLine            String y   keyboard nextLine            String z   keyboard nextLine            int max   Math max x y z           System out println x         y       z           System out println  The max of three is      max                I want to know what s wrong with this code and how I can find the max when I input 3 different values

User · Answer

It would help if you provided the error you are seeing. Look at http://docs.oracle.com/javase/7/docs/api/java/lang/Math.html and you will see that max only returns the max between two numbers, so likely you code is not even compiling.

Solve all your compilation errors first.

Then your homework will consist of finding the max of three numbers by comparing the first two together, and comparing that max result with the third value. You should have enough to find your answer now.

User · Answer

You should know more about java lang Math max    java lang Math max arg1 arg2  only accepts 2 arguments but you are writing 3 arguments in your code  The 2 arguments should be double int long and float but your are writing String arguments in Math max function  You need to parse them in the required type    You code will produce compile time error because of above mismatches   Try following updated code  that will solve your purpose   import java lang Math  import java util Scanner  public class max       public static void main String   args            Scanner keyboard   new Scanner System in           System out println  Please input 3 integers              int x   Integer parseInt keyboard nextLine             int y   Integer parseInt keyboard nextLine             int z   Integer parseInt keyboard nextLine             int max   Math max x y           if max gt y     suppose x is max then compare x with z to find max number             max   Math max x z                         else    if y is max then compare y with z to find max number             max   Math max y z                         System out println  The max of three is      max

User · Answer

Two things  Change the variables x   y   z as int and call the method as Math max Math max x y  z  as it accepts two parameters only   In Summary  change below       String x   keyboard nextLine        String y   keyboard nextLine        String z   keyboard nextLine        int max   Math max x y z     to       int x   keyboard nextInt        int y   keyboard nextInt        int z   keyboard nextInt        int max    Math max Math max x y  z

[java] Need to find a max of three numbers in java

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