How to copy an entire content from a directory to another in Java?

File content[] = new File("C:/FilesToGo/").listFiles();

for (int i = 0; i < content.length; i++){                       

    String destiny = "C:/Kingdoms/"+content[i].getName();           
    File desc = new File(destiny);      
    try {
        Files.copy(content[i].toPath(), desc.toPath(), StandardCopyOption.REPLACE_EXISTING);
    } catch (IOException e) {
        e.printStackTrace();
    }                   
}   

This is what I have. It copies everything just fine. But among the contents there are some folders. The folders are copied but the folder’s contents are not.

Answer

Recursion. Here is a method the uses rescursion to delete a system of folders:

public void move(File file, File targetFile) {
    if(file.isDirectory() && file.listFiles() != null) {
        for(File file2 : file.listFiles()) {
            move(file2, new File(targetFile.getPath() + "\" + file.getName());
        }
    }
    try {
         Files.copy(file, targetFile.getPath() + "\" + file.getName(),  StandardCopyOption.REPLACE_EXISTING);
    } catch (IOException e) {
        e.printStackTrace();
    } 
}

Didn’t test the code, but it should work. Basically, it digs down into the folders, telling it to move the item, if its a folder, go through all its children, and move them, etc.