Question

public static void main (String args[]) {

Scanner myinput=new Scanner(System.in) ;  //Arrary length comes from user!
System.out.println("Enter a number: ") ;  
int sayi=myinput.nextInt() ;

int [] Array = new int [sayi] ;  

for(int i=0; i<SayiDizisi.length ; i++){ //Fill the array!(Comes from user)
    System.out.println("Enter the numbers: ") ;
    SayiDizisi[i]=myinput.nextInt() ;}
}

Max(int [] SayiDizisi) ; // ???????????????????????????????????
}

public static int Max(int [] Array1) {    
    int max=SayiDizisi1[0] ;
    for(int i=0; i<SayiDizisi1.length ; i++) {
      if(SayiDizisi1[i]>max)
        max=SayiDizisi1[i] ;  
}


  return SayiDizisi ;   //?????????????????????


  }
}

Answer 1

For a start, you should not have the int [] type in the method call. Change:

Max (int[] SayiDizisi);

to:

Max (SayiDizisi);

Secondly, your Max function is expected to return an integer but it’s returning an array of integers. Change its return statement from:

return SayiDizisi;

to:

return max;

Thirdly, I can’t see where SayiDizisi is defined anywhere. You appear to be creating an array to be populated but you’ve called it Array. Change:

int[] Array = new int[sayi];

to:

int[] SayiDizisi = new int[sayi];

Finally, your braces are not balanced. See the line SayiDizisi[i]=myinput.nextInt() ;} – it has a superfluous brace at the end which causes the compiler to misunderstand your intent.

---

Here’s a fully functioning one with those fixes made, and some comments added for your education:

import java.util.Scanner;

public class scratch {
    public static void main (String args[]) {
        // Get the count and allocate array.

        Scanner myinput = new Scanner (System.in);
        System.out.println ("Enter a number: ");
        int sayi = myinput.nextInt();

        int[] SayiDizisi = new int[sayi];

        // Get the values into the array.

        for (int i = 0; i < SayiDizisi.length ; i++) {
            System.out.println ("Enter the numbers: ");
            SayiDizisi[i] = myinput.nextInt();
        }

        // Output the maximum.

        int x = Max (SayiDizisi);
        System.out.println ("Maximum is: " + x);
    }

    public static int Max(int[] Array1) {
        // Assume first is largest.

        int max = Array1[0] ;

        // Check all others, finding larger.

        for (int i = 0; i < Array1.length ; i++) {
            if (Array1[i] > max)
                max = Array1[i];
        }

        // Return the largest found.

        return max;
    }
}