Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import android.support.annotation.NonNull;
import android.text.TextUtils;
import java.lang.reflect.ParameterizedType;

import java.util.Collection;

import java.util.List;

public class Main {
    @NonNull
    public static Class getListTypeClass(List<?> list) {
        Class elementType;

        if (isEmpty(list)) {
            final Class<? extends List> listClass = list.getClass();
            final ParameterizedType genericSuperclass = (ParameterizedType) listClass.getGenericSuperclass();
            elementType = (Class) genericSuperclass.getActualTypeArguments()[0];
        } else {
            elementType = list.get(0).getClass();
        }

        return elementType;
    }

    public static <T> boolean isEmpty(T[] array) {
        return array == null || array.length == 0;
    }

    public static boolean isEmpty(int[] array) {
        return array == null || array.length == 0;
    }

    public static boolean isEmpty(long[] array) {
        return array == null || array.length == 0;
    }

    public static boolean isEmpty(Collection collection) {
        return collection == null || collection.isEmpty();
    }

    public static boolean isEmpty(String string) {
        return TextUtils.isEmpty(string);
    }

    public static boolean isEmpty(CharSequence cs) {
        return cs == null || cs.length() == 0;
    }
}