com.gitee.cliveyuan.tools.CollectionTools Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of java-tools Show documentation
Show all versions of java-tools Show documentation
Some commonly used methods in java
package com.gitee.cliveyuan.tools;
import java.util.Collection;
import java.util.Map;
import java.util.Objects;
/**
* 集合工具类
*
* @author clive
* Created on 2018/07/23
* @since 1.0
*/
public class CollectionTools {
private CollectionTools() {
}
/**
* 集合是否为空
*
* @param collection 集合
*/
public static boolean isEmpty(Collection> collection) {
return collection == null || collection.isEmpty();
}
/**
* 集合是否不为空
*
* @param collection 集合
*/
public static boolean isNotEmpty(Collection> collection) {
return !isEmpty(collection);
}
/**
* map是否为空
*
* @param map map
*/
public static boolean isEmpty(Map map) {
return map == null || map.isEmpty();
}
/**
* map是否不为空
*
* @param map map
*/
public static boolean isNotEmpty(Map map) {
return !isEmpty(map);
}
/**
* 数组是否空
*
* @param array 数组
*/
public static boolean isEmpty(Object[] array) {
return Objects.isNull(array) || array.length == 0;
}
/**
* 数组不为空
*
* @param array 数组
*/
public static boolean isNotEmpty(Object[] array) {
return !isEmpty(array);
}
public static boolean isEmpty(int[] array) {
return Objects.isNull(array) || array.length == 0;
}
public static boolean isNotEmpty(int[] array) {
return !isEmpty(array);
}
public static boolean isEmpty(long[] array) {
return Objects.isNull(array) || array.length == 0;
}
public static boolean isNotEmpty(long[] array) {
return !isEmpty(array);
}
public static boolean isEmpty(float[] array) {
return Objects.isNull(array) || array.length == 0;
}
public static boolean isNotEmpty(float[] array) {
return !isEmpty(array);
}
public static boolean isEmpty(double[] array) {
return Objects.isNull(array) || array.length == 0;
}
public static boolean isNotEmpty(double[] array) {
return !isEmpty(array);
}
}