Question

Java 两个String类型的数组,取出两个数组里面的相同元素在存在另外一个数组中？

Java

Answer 1

import java.util.Arrays;
import java.util.Collection;
import java.util.List;

import org.apache.commons.collections.CollectionUtils;

public class Test {
public static void main(String[] args) {
List<String> a = Arrays.asList("a", "b", "c");
List<String> b = Arrays.asList("a", "b");
Collection<String> c = CollectionUtils.intersection(a, b);
String[] arr = c.toArray(new String[c.size()]);
System.out.println(Arrays.toString(arr));
}
}