How to provide file permissions using Java?

By arunraj

Prior to Java 1.6, the only possible way (but not advisable always) is using the Run time class in Java api.

try
{
    Runtime.getRuntime().exec("chmod 777 *.txt");
}
catch (IOException e1)
{
    e1.printStackTrace();
}    

With Java 1.6, you can do the same programmatically. Consider the following code snippet as example.

File f1 = new File("");
if(!f1.exists())
{    
    f1.createNewFile();
    f1.setReadable(true);
    f1.setWritable(true);
    f1.setExecutable(true);
}
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