Thread: Simply error; can't quite fix it.

Making a simple strobe light out of my camera's flash feature.
I can't figure out why I'm getting an error on lines 31 and 32 for the

cam.stopPreview(); 
cam.release();

Here's my activity;

package com.Strobe; 
 
import android.app.Activity; 
import android.content.pm.PackageManager; 
import android.hardware.Camera; 
import android.hardware.Camera.Parameters; 
import android.os.Bundle; 
 
public class MainActivity extends Activity 
{ 
    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) 
    { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.main); 
 
        getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH); 
 
        for (int i=1;i<1000;i++) 
        { 
            for (int j=1;j<2;j++) 
            { 
                Camera cam = Camera.open();      
                Parameters p = cam.getParameters(); 
                p.setFlashMode(Parameters.FLASH_MODE_TORCH); 
                cam.setParameters(p); 
                cam.startPreview(); 
            } 
 
                cam.stopPreview(); 
                cam.release(); 
        } 
    } 
}

Here's my layout.xml file;

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:screenOrientation="portrait" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" > 
<TextView   
    android:layout_width="fill_parent"  
    android:layout_height="wrap_content"  
    android:text="Hello World, MainActivity" /> 
</LinearLayout> 
<permission android:name="android.permission.FLASHLIGHT" 
             android:permissionGroup="android.permission-group.HARDWARE_CONTROLS" 
             android:protectionLevel="normal" 
             android:label="@string/permlab_flashlight" 
             android:description="@string/permdesc_flashlight" />

Thanks in advance!

an error

The specifics are quite important - next time copy and paste the _entire_ error output.

'cam' is out of scope - you declare it within the curly brackets of the for loop.