This article will show you two method that can convert a Java String List to String Array. Below is the Java example code. Please see the comments for detail explanation.
public class ConvertJavaStringListToArray {
public static void main(String[] args) {
List<String> arrayList = new ArrayList<String>();
arrayList.add("Java");
arrayList.add("C++");
arrayList.add("MFC");
arrayList.add("Python");
arrayList.add("Perl");
//String strArr[] = ConvertJavaStringListToArray.stringListToArray(arrayList);
String strArr[] = ConvertJavaStringListToArray.stringListToArray1(arrayList);
for(String str : strArr)
{
System.out.println(str);
}
}
private static String[] stringListToArray(List<String> strList)
{
/* First convert the List to an object array. */
Object objArr[] = strList.toArray();
/* Use Arrays.copyOf method to translate the object array to string array. */
String ret[] = Arrays.copyOf(objArr, objArr.length, String[].class);
return ret;
}
private static String[] stringListToArray1(List<String> strList)
{
if(strList!=null)
{
/* Get the list size. */
int size = strList.size();
/* Define the return array with the size. */
String retArr[] = new String[size];
/* Loop in the list, add each string to the array. */
for(int i=0; i<size; i++)
{
retArr[i] = strList.get(i);
}
return retArr;
}else
{
String retArr[] = {};
return retArr;
}
}
}
The Output
Java C++ MFC Python Perl
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