Java - Write code to Convert array to String using StringBuilder

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Requirements

Write code to Convert array to String

Use the splitor symbol to join the string

Hint

Use StringBuilder class to append the string.

Demo

//package com.book2s;

public class Main {
    public static void main(String[] argv) {
        String[] array = new String[] { "1", "abc", "level", null,
                "book2s.com", "asdf 123" };
        System.out.println(array2String(array));
    }//  www  .j a  v a2  s. c o m

    private final static String SPLIT_SYMBOL = "|";

    public static String array2String(String[] array) {
        if (array == null || array.length <= 0)
            return null;
        StringBuilder builder = new StringBuilder();
        for (int i = 0; i < array.length - 1; i++) {
            builder.append(array[i]);
            builder.append(SPLIT_SYMBOL);
        }
        builder.append(array[array.length - 1]);
        return builder.toString();
    }
}

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