What's wrong with using int variable ? Making the application to crash

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http://stackoverflow.com – This is my MainActivity.java I used // to mark as not using on some lines and found that the line start with int t = Is the problem that make the application to crash and force closing. package com.example.camera_test; import android.os.Build; import android.os.Bundle; import android.annotation.SuppressLint; import android.app.Activity; import android.content.Intent; import android.graphics.Bitmap; import android.hardware.Camera; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.ImageView; import (HowTos)