Question

How to format strings with padding to the left and right into a String using String.format() in Java

Answer 1

package javaapplication1;

public class JavaApplication1 {

    public static void main(String[] args) {

        try {

            String s1 = "java";
            String s2 = "c++";

            String s = String.format("%-13s %13s", s1, s2);
            
            System.out.println(s);

        } catch (Exception e) {
            System.out.print(e.toString());
        }
    }
}

/*
             
run:

java                    c++
    
 */

 

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Answer 2

package javaapplication1;

public class JavaApplication1 {

    public static void main(String[] args) {

        try {

            String[] arr1 = {"aaa", "bbb", "cccc", "dddddd"};
            String[] arr2 = {"eee", "fffff", "gg", "kkk"};

            for (int i = 0; i < arr1.length; i++) {
                String s = String.format("%-13s %13s", arr1[i], arr2[i]);
                System.out.println(s);
            }

        } catch (Exception e) {
            System.out.print(e.toString());
        }
    }
}

/*
             
run:

aaa                     eee
bbb                   fffff
cccc                     gg
dddddd                  kkk
    
 */

 

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