Remove null value from an array - Android java.lang

Android examples for java.lang:array element remove

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Description

Remove null value from an array

Demo Code


import java.util.ArrayList;
import java.util.List;
import java.util.Set;

public class Main{
    /*  ww w.  j a  va  2  s.co  m*/
    public static String[] clearNull(String[] array) {
        ArrayList<String> list = new ArrayList<String>();
        for (int i = 0; i < array.length; i++) {
            if (array[i] != null) {
                list.add(array[i]);
            }
        }
        return toArray(list);
    }
    
    public static String toString(String[] args) {
        return toString(args, ",");
    }
    
    public static String toString(String[] args, String separator) {
        if (Validators.isEmpty(args)) {
            return null;
        }
        StringBuilder buffer = new StringBuilder();
        for (int i = 0; i < args.length; i++) {
            if (i > 0) {
                buffer.append(separator);
            }
            buffer.append(args[i]);
        }
        return buffer.toString();
    }
    
    public static String[] toArray(List<String> list) {
        return list.toArray(new String[list.size()]);
    }
    
    public static String[] toArray(Set<String> set) {
        return set.toArray(new String[set.size()]);
    }
}

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