You may need to take a course on Java in general before you start jumping into Android which far more complex. Every argument for requestPermissions is not valid Java
activity: this is not valid Java. Just use this.
string[]{Manifest.permission.RECORD_AUDIO} is not valid Java. Change it to this
new String[]{Manifest.permission.RECORD_AUDIO}
requestCode.1 is not valid Java just use 1
The end result should be this
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.RECORD_AUDIO}, 1);
solved Why getting errors in android studio when adding code to the main activity xml? [closed]