I am beginner in learning android java. I learning the java android tutorial from Youtube and I follow exactly the coding from the video, but my coding showing "cannot resolve symbol 'tag' " on the android studio. May I know what is the problem? and hope to get explanation from all the master here.

```
package com.NewApplicationLifeCycle;

import ...

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Log.i( tag: "State", msg: "onCreate" );
    }

    @Override
    protected void onStart() {
        super.onStart();
        Log.i( tag: "State", msg: "onStart" );
    }

    @Override
    protected void onResume() {
        super.onResume();
        Log.i( tag: "State", msg: "onResume" );
    }

    @Override
    protected void onPause() {
        super.onPause();
        Log.i( tag: "State", msg: "onPause" );
    }

    @Override
    protected void onStop() {
        super.onStop();
        Log.i( tag: "State", msg: "onStop" );
    }

    @Override
    protected void onRestart() {
        super.onRestart();
        Log.i( tag: "State", msg: "onRestart" );
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        Log.i( tag: "State", msg: "onDestroy" );
    }
}

```