Java Programming

We have a file system FileSystem that contains files in the form of the matrix. Each of these files have the following 4 attributes:
size;
name;
timeCreated;
permission;
I need implement a way to search in your file system based on any combination of attributes
eg: all files that have Permission W and created before 18-05-2022
eg2: all files with name containg "asd"
The filesystem matrix has to be traversed in reversed diagonal ( ⬋ ) :
eg for matrix :
123456789
the traversal should be : [1 2 4 3 5 7 6 8 9]
How would be the best way to do that?
Thanks in advance :)

Code:

package util.filesystem;

import java.time.LocalDateTime;

public enum FileSystem {
    FILE_SYSTEM;


    public static File[][] files = new File[5][5];

    static {
        for (int i = 0; i < 5; i++) {
            for (int j = 0; j < 5; j++) {

                long size = 1000 * (i+j);
                String name = "file" + i + j;
                final LocalDateTime creationTime = LocalDateTime.of(2022, 12, i+j+1, 12, 12);
                Permissions permission = Permissions.values()[(10*i+j) % 3];
                files[i][j] = new File(size, name, creationTime, permission);
            }
        }
    }
}

package util.filesystem;

import java.time.LocalDateTime;

import lombok.AllArgsConstructor;
import lombok.Data;

@Data
@AllArgsConstructor
public class File {
    private long size;
    private String name;
    private LocalDateTime timeCreated;
    private Permissions permission;
}
package util.filesystem;

public enum Permissions {
    R, W , RW
}

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>Teste</groupId>
  <artifactId>Teste</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <build>
    <sourceDirectory>src</sourceDirectory>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.8.0</version>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
        </configuration>
      </plugin>
    </plugins>
  </build>
      <properties>
        <maven.compiler.source>11</maven.compiler.source>
        <maven.compiler.target>11</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.24</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>
</project>