java - 即使 if 语句为 true，文件也不会被删除，但如果没有 if 语句则正在删除

Question

每当我添加:

if(lines[0].equalsIgnoreCase("所有者:"+ sender.getName()))

文件没有删除，但还是这样:

System.out.println("删除消息成功!");

仍然运行，意味着 if 语句为 true。

每当我删除上面的 if 语句时，它都会删除该文件。

这是代码:(不是最好的)

String lines[], strLine;
int a = 0;
String fileLoc = currentDir + "//plugins//ExtendedSigns//" + c[1] + ".txt";
LineNumberReader  lnr = new LineNumberReader(new FileReader(new File(fileLoc)));
FileInputStream in = new FileInputStream(fileLoc);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
lnr.skip(Long.MAX_VALUE);
lines = new String[1 + lnr.getLineNumber()];
while ((strLine = br.readLine()) != null)   
{
    lines[a] = strLine;
    a++;
}
if(lines[0].equalsIgnoreCase("owner: " + sender.getName()))
{
    File del = new File(currentDir + "//plugins//ExtendedSigns//" + c[1] + ".txt");
    del.delete();
    System.out.println("Deleted message successfully!");

}
else
{
    System.out.println("Deleted message unsuccessfully! You do not own it!");
}

Answer 1

试试这个:

if(del.delete()) System.out.println("Deleted message successfully!");
else System.out.println("Deleted message unsuccessfully! You do not own it!");