Displaying Elements of Multidimensional Array of Strings [Java]

Question

I am new in programming. Need to have your advise to shorten improve my code below.

public class Exercise4 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        String[][] info = {{"010","John","Male","21"},
                            {"011","Mary","Female","25"},
                            {"012","Joseph","Male","24"},
                            {"013","Peter","Male","22"}};

        for(int i = 0; i < 4; i++) {

            for(int j = 0; j < 4; j++) {

                if(j == 0) {
                    System.out.print("ID: ");
                } else if(j == 1) {
                    System.out.print("Name: ");
                } else if(j == 2) {
                    System.out.print("Gender: ");
                } else if(j == 3) {
                    System.out.print("Age: ");
                }

                System.out.println(info[i][j]);
            }
            System.out.println();
        }

    }

}

This will display the following output. Is there any way to improve/shorten my code? I think there's a way to shorten it but I just couldn't figure it out.

Output:

Since this is already working code, this might be better asked at Code Review. — Gino Mempin
– Gino Mempin, Commented May 18, 2018 at 5:04
I'm voting to close this question as off-topic because the question belongs on Code Review. — Paul Samsotha
– Paul Samsotha, Commented May 18, 2018 at 5:44

Scary Wombat · Accepted Answer · 2018-05-18 05:59:41Z

2

As you are using hard-coded array bounds, You could also do it as given below:

for(int i = 0; i < info.length; i++) {
        System.out.printf ("%nID: %s%nName: %s%nGender: %s%nAge:%s%n", 
                           info[i][0], info[i][1], info[i][2], info[i][3]);
}

edited May 18, 2018 at 5:59

answered May 18, 2018 at 5:05

Scary Wombat

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Comments

Derrick · Accepted Answer · 2018-05-18 05:41:38Z

0

You can do something like this -

List<String> headerList = Arrays.asList(new String[]{"ID","Name","Gender","Age"});
List<String[]> infoList = Arrays.asList(info);
for(String[] s: infoList){
  int count = 0;
  for(String header : headerList){
    System.out.println(header+": "+s[count]);
    count++;
    }
 }

Note: Headers length and rows length should be same.

answered May 18, 2018 at 5:41

Derrick

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