文件过滤器测试

import java.io.File;

public class FilenameFilterTest {
    public static void main(String[] args) {
        File file = new File(".");
        //使用Lambda表达式实现文件过滤器
        //如果文件名以.java结尾，或者文件对应一个路径,则返回true
        String [] nameList = file.list((dir,name)->name.endsWith(".java")
        || new File(name).isDirectory());
        for (String name : nameList)
        {
            System.out.println(name);
        }
    }
}