String []array = new String[]{"A", "B", "C"};
{
System.out.println("数组排序");
Arrays.sort(array);
for (String r : array) {
System.out.println(r);
}
}
{
System.out.println("数组转List");
for (String r : Arrays.asList(array)) {
System.out.println(r);
}
}
{
System.out.println("List转数组");
List<String> list = Arrays.asList(array);
for (String r : list.toArray(new String[list.size()])) {
System.out.println(r);
}
}
{
System.out.println("数组转成set集合");
Set<String> set = new HashSet<>(Arrays.asList(array));
System.out.println(set);
}
{
System.out.println("数组转字符串,以逗号隔开");
String s = StringUtils.join(array, ",");
System.out.println(s);
}
{
System.out.println("数组转字符串,以单引号及逗号分开,一般用于SQL拼IN串");
String s = StringUtils.join(array, "\',\'");
String s1 = StringUtils.wrap(s, "\'");
System.out.println(s1);
}
输出结果:
数组排序
A
B
C
数组转List
A
B
C
List转数组
A
B
C
数组转成set集合
[A, B, C]
数组转字符串,以逗号隔开
A,B,C
数组转字符串,以单引号及逗号分开,一般用于SQL拼IN串
'A','B','C'