java - 数组返回 NULL

Question

我的一段代码..

package com.xchanging.selenium.utility;

import java.io.IOException;
import java.util.LinkedHashMap;

import org.apache.commons.lang3.ArrayUtils;

public class DataProviderConvertor extends ReadExcel {

    public static Object[][] convertData(String sheetName, String testCaseName)
            throws IOException {

        LinkedHashMap<String, String> table = ReadExcel.getData(sheetName,
                testCaseName);
        String[] myStringArray = new String[table.size()];
        for (String key : table.values()) {
            System.out.println("Keyvalues " + key.toString());
            String value = key.toString();
            ArrayUtils.add(myStringArray, value);
        }
        System.out.println("1st Index: " myStringArray[0]);
    }
  }

回来了

Keyvalues Y
Keyvalues ie
Keyvalues QC 
Keyvalues Yes
Keyvalues Rework Checklist Comments
Keyvalues Yes
Keyvalues MRI Updated Comments


1st Index: null

我期望这个数组中有 6 个元素，但所有元素都返回 NULL..为什么它没有返回预期值..??

Answer 1

更简单的方法怎么样。

public static Object[][] convertData(String sheetName, String testCaseName)
        throws IOException {

    LinkedHashMap<String, String> table = ReadExcel.getData(sheetName,
            testCaseName);

    String[] myStringArray = table.values().toArray( new String[ 0 ] );

    System.out.println("1st Index: " + myStringArray[0]);
}