Java IO Tutorial - Java FileStore .getUnallocatedSpace ()

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Syntax

FileStore.getUnallocatedSpace() has the following syntax.

public abstract long getUnallocatedSpace()     throws IOException

Example

In the following code shows how to use FileStore.getUnallocatedSpace() method.

import java.io.IOException;
import java.nio.file.FileStore;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
/*from  ww  w  . ja va  2  s  .  c o m*/
public class Main {

  public static void main(String[] args) throws IOException {
    FileSystem fileSystem = FileSystems.getDefault();

    for (FileStore store : fileSystem.getFileStores()) {
      long total = store.getUnallocatedSpace() / 1024;
            System.out.println(total);
    }
  }
}

The code above generates the following result.

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