import java.io.File;
import java.io.IOException;

public class Test {

    /**
     * @param args
     * @throws IOException
     */
    public static void main(String[] args) throws IOException {
        File file = new File("aaa.txt");
        file.createNewFile();

        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        File file1 = new File("aaa1.txt");
        file1.createNewFile();

        // file1.setLastModified(file.lastModified() + 1);

        System.out.println(file.lastModified());
        System.out.println(file1.lastModified());
    }

}

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