Conversion of integer array to a string in Android/Java

Question

I have an array:

int A = {1,2,3,4,5,6};

I would like to display it on phone screen as a single string 123456 (or 1 2 3 4 5 6) (i.e. with a space between each number. Could you please help to let me know how to do it?

check here http://stackoverflow.com/questions/409784/simplest-way-to-print-an-array-in-java — fonZ, Oct 12 '12 at 22:03
just google it, if you cannot find then place the question here dude. — P basak, Oct 12 '12 at 22:27

score 1 · Answer 1 · answered Oct 12 '12 at 22:19

1

Shortcut:

String line = "";
for(int temp : A) {
    line = line + (""+temp);
}
System.out.println(line);

answered Oct 12 '12 at 22:19

Plasma

1,903
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score 0 · Answer 2 · edited May 23 '17 at 12:27

You could use a combination of loop and StringBuilder:

Note, using StringBuilder is greatly recommended when dealing with String and String concatenation in a loop process. Read this for reference: StringBuilder vs String concatenation in toString() in Java

int[] A = new int[]{1,2,3,4,5,6};
StringBuilder sb = new StringBuilder();
for(int ctr = 0; ctr < A.length; ctr++){
    sb.append(A[ctr]);

    //print separator only when there are items after this one.
    if(ctr < A.length -1){
        sb.append(", ");
    }
}

System.out.println(sb.toString());

score 0 · Answer 3 · answered Oct 12 '12 at 22:25

0

If only printing is the issue, then why not do it in a simple way,

for(int i = 0; i < A.length; i++){
    System.out.print(A[i]);//not println
}
System.out.println();//just add an extra line.

Another can be, Arrays.toString(A)//verify this.

answered Oct 12 '12 at 22:25

P basak

4,874
11
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Conversion of integer array to a string in Android/Java

3 Answers3