Java reads the files with the specified suffix under the specified directory

Java reads the files with the specified suffix under the specified directory

1. POM import dependencies

<dependency>
    <groupId>commons-io</groupId>
    <artifactId>commons-io</artifactId>
    <version>2.4</version>
</dependency>

2. Example

Take the .java file as an example, the specified directory is directory, and the third parameter of listFiles indicates whether to recurse, and recursion means reading subdirectories

import org.apache.commons.io.FileUtils;
import java.io.File;

...

File rootDir = new File("D://test");
Collection<File> files = FileUtils.listFiles(rootDir, new String[]{"java"}, true);
//标识读取D://test目录下面所有.java的文件