Java8 - > Java7轉換File.walk

Question

我想Java8的下面的代碼片段轉換爲Java7：

Files.walk(Paths.get(modifiedPathName)) 
.filter(Files::isRegularFile) 
.forEach(path -> { 
    mutatedFileStorage.add((T) application.readFromFile(path)); 
    }); 

我已經嘗試以下操作：

Iterator<Path> it = Files.walkFileTree(Paths.get(modifiedPathName)).iterator(); 
Path path = null; 
while(it.hasNext()) { 
    path = it.next(); 
    if(Files.isRegularFile(path)) { 
      mutatedFileStorage.add((T) application.readFromFile(path)); 
    } 
} 

的問題是，我總是收到錯誤：

error: no suitable method found for walkFileTree(Path) 
     Iterator<Path> it = Files.walkFileTree(Paths.get(modifiedPathName)).iterator(); 

我不知道如何轉換ert Files.walk到Java7，所以這是我最好的嘗試？是否可以對我的Java7代碼進行一些小修改來修復它？還是我必須完全做其他事情？

Answer 1

我想你會想使用Files.walkFileTree：

final Collection<T> finalMutatedFileStorage = mutatedFileStorage; 
final Application finalApplication = application; // guessing at the type here 
Files.walkFileTree(Paths.get(modifiedPathName), new SimpleFileVisitor<Path>() { 
    @Override 
    public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) 
    throws IOException { 
    if (attrs.isRegularFile()) { 
     finalMutatedFileStorage.add((T) finalApplication.readFromFile(file)); 
    } 
    return FileVisitResult.CONTINUE; 
    } 
});