CODEWITHSUNDEEP
javaarrays
victorh
victorh

Reputation: 21

This code is printing an array with 0 0 0 0 0 5 and not the expected array

class ArrayPrint {

    static void arrayPrinter(int[] x) {
        for (int i = 0; i < x.length; i++) {
            System.out.println(x[i]);
        }
    }

    public static void main(String... S) {

        int[] x = {3, 3, 4, 2, 7};
        x = new int[5];
        arrayPrinter(x);
        System.out.println(x.length);
    }
}

The expected array is not printing, it is instead printing 0 0 0 0 0. What could be the error?

Upvotes: 0

Views: 331

Answers (5)

Ahmed Adel Ismail
Ahmed Adel Ismail

Reputation: 2184

you are re-initializeing your array, you should either use 

int[]x = new int[5];
x[0] = 3;
x[1] = 3;
// and the rest of your array

OR

int[]x = {3,3,...};

then you can print your array,

try 

import java.util.*;
// ... some code
System.out.println(Arrays.toString(x));

Upvotes: 1

Sotirios Delimanolis
Sotirios Delimanolis

Reputation: 279910

int[] x = {3,3,4,2,7};
x = new int[5]; // re-initializing

You are re-initializing the array. By default, the element values in the new array will all be 0.

Just remove the 

x = new int[5];

This notation

int[] x = {3,3,4,2,7};

Creates an int array of size 5, with the element values you've specified.

Upvotes: 4

Christian
Christian

Reputation: 4375

Well, you are re-initializing the array to 0, 0, 0,0.

When you write int[] x = {3,3,4,2,7}; it initializes the array with your desired values, but in the next line you overwrite it with a "new" int[5], therefore five 0's

Upvotes: 1

Prabhaker A
Prabhaker A

Reputation: 8473

You are re initialized x array with the statement 

x = new int[5];

By default, the values of array will be 0.That is the reason you are getting the output. So remove it 

public static void main(String...S) {    
      int[] x = {3,3,4,2,7};
      arrayPrinter(x);
      System.out.println(x.length);
    }

Upvotes: 1

Kon
Kon

Reputation: 10810

x = new int[5];

Re-initializes your array to all zeroes. Remove that line.

Upvotes: 1

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