如何以编程方式删除linux中某个目录中存在的文件

Question

My aim is to delete a file in some directory present in linux using a java program. I have the following line that does that:

java.lang.Runtime.getRuntime().exec("/bin/rm -f " + fileToDelete.getAbsolutePath());

But I read that using linux commands from java program would be a costlier operation. Could anyone let me know if there is another way of doing this?

Answer 1

怎么样File#delete()

boolean isFileDeleted = fileToDelete.delete();

Answer 2

You could use a File object, as such:

// initializes your file with your full path (or use your "fileToDelete" variable)
File file = new File("myFile");
// attempts to set the file writable and returns boolean result
System.out.println("Could set file writable: " + file.setWritable(true));
// attempts to delete the file and returns boolean result
System.out.println("Deleted succesfullly: " + file.delete());

Permission / delete operations may throw an unchecked SecurityException .

Answer 3

if(file.exists())
    boolean isSuccessful = file.delete();

Answer 4

Try this, it works in my Linux

File f= new File("Path");
try {
    java.lang.Runtime.getRuntime().exec("rm -f " + f.getAbsolutePath());
} catch (IOException e) {
    e.printStackTrace();
}