how to check if a file exists in android studio code example

Example 1: android studio file exist

File dir = getFilesDir();
File file = new File(dir, filename);
if(filename.exists()){      
//Do something
}else{
// Do something else.
}

Example 2: android studio file exist

File file = new File(filePath);
if(file.exists()){      
//Do something
}else{
// Do something else.
}