前言
本文主要实现的功能是删除某个目录及目录下的所有子目录和文件,涉及到的知识点:File.delete()
用于删除“某个文件或者空目录”!所以要删除某个目录及其中的所有文件和子目录,要进行递归删除。
具体代码示例如下:
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import java.io.File;
public class DeleteDirectory {
/**
* 删除空目录
* @param dir 将要删除的目录路径
*/
private static void doDeleteEmptyDir(String dir) {
boolean success = ( new File(dir)).delete();
if (success) {
System.out.println( "Successfully deleted empty directory: " + dir);
} else {
System.out.println( "Failed to delete empty directory: " + dir);
}
}
/**
* 递归删除目录下的所有文件及子目录下所有文件
* @param dir 将要删除的文件目录
* @return boolean Returns "true" if all deletions were successful.
* If a deletion fails, the method stops attempting to
* delete and returns "false".
*/
private static boolean deleteDir(File dir) {
if (dir.isDirectory()) {
String[] children = dir.list();
//递归删除目录中的子目录下
for ( int i= 0 ; i<children.length; i++) {
boolean success = deleteDir( new File(dir, children[i]));
if (!success) {
return false ;
}
}
}
// 目录此时为空,可以删除
return dir.delete();
}
/**
*测试
*/
public static void main(String[] args) {
doDeleteEmptyDir( "new_dir1" );
String newDir2 = "new_dir2" ;
boolean success = deleteDir( new File(newDir2));
if (success) {
System.out.println( "Successfully deleted populated directory: " + newDir2);
} else {
System.out.println( "Failed to delete populated directory: " + newDir2);
}
}
}
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总结
以上就是这篇文章的全部内容了,希望本文的内容对大家的学习或者工作能带来一定的帮助,如果有疑问大家可以留言交流。
原文链接:http://www.cnblogs.com/eczhou/archive/2012/01/16/2323431.html