My problem is that when i press save or load button ,the app crash.

log cat 

```
    E/ AndroidRuntime(4101):  FATAL EXCEPTION:   main
    E /AndroidRuntime(4101):android.database.sqlite.SQLiteException: no such table:
    mytable:while compiling: INSERT INTO mytable(email, name) VALUES(?, ?);
    E/AndroidRuntime(4101):at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method)
    E/AndroidRuntime(4101):atandroid.database.sqlite.SQLiteCompiledSql.compile(SQLiteCompiledSql.java:92)
    E/AndroidRuntime(4101):at android.database.sqlite.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:65)
    E/AndroidRuntime(4101):at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:83)
    E/AndroidRuntime(4101):at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:41)
E/AndroidRuntime(4101):android.database.sqlite.SQLiteDatabase.compileStatement(SQLiteDatabase.java:1150)
E/AndroidRuntime(4101):atandroid.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1576)
E/AndroidRuntime(4101):atandroid.database.sqlite.SQLiteDatabase.insertOrThrow(SQLiteDatabase.java:1456)
    E/AndroidRuntime(4101): at com.databasedemo.DataHandler.insertData(DataHandler.java:65)
     E/AndroidRuntime(4101):at com.databasedemo.MainActivity$1.onClick(MainActivity.java:37)
     E/AndroidRuntime(4101):at android.view.View.performClick(View.java:2485)
     E/AndroidRuntime(4101):at android.view.View$PerformClick.run(View.java:9080)
     E/AndroidRuntime(4101):at android.os.Handler.handleCallback(Handler.java:587)
     E/AndroidRuntime(4101):at android.os.Handler.dispatchMessage(Handler.java:92)
     E/AndroidRuntime(4101):at android.os.Looper.loop(Looper.java:130)
     E/AndroidRuntime(4101):at android.app.ActivityThread.main(ActivityThread.java:3687)
     E/AndroidRuntime(4101):at java.lang.reflect.Method.invokeNative(Native Method)
     E/AndroidRuntime(4101):at java.lang.reflect.Method.invoke(Method.java:507)
E/AndroidRuntime(4101):atcom.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
    E/AndroidRuntime(4101):at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
    E/AndroidRuntime(4101): at dalvik.system.NativeStart.main(Native Method)

```

Below is MainActivity.java

```
  package com.databasedemo;
  import android.os.Bundle;
  import android.app.Activity;
  import android.database.Cursor;
  import android.view.Menu;
  import android.view.View;
  import android.view.View.OnClickListener;
  import android.widget.Button;
  import android.widget.EditText;
  import android.widget.Toast;
  public class MainActivity extends Activity {
   Button save,load;
EditText name,email;
DataHandler handler;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    save =(Button)findViewById(R.id.save);
    load=(Button) findViewById(R.id.load);
    email=(EditText) findViewById(R.id.email);
    name=(EditText) findViewById(R.id.name);
    save.setOnClickListener(new OnClickListener(){

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            String getName=name.getText().toString();
            String getEmail=email.getText().toString(); 
            handler=new DataHandler(getBaseContext());
            handler.open();
            long id=handler.insertData(getName, getEmail);
            Toast.makeText(getBaseContext(), "DATA INSERTED",      Toast.LENGTH_LONG).show();
        handler.close();
        }

    });

    load.setOnClickListener(new OnClickListener(){

        @Override
        public void onClick(View v) {
            String getName,getEmail;
            getName="";
            getEmail="";

        handler=new DataHandler(getBaseContext());
            handler.open();
            Cursor c=handler.returnData();
            if(c.moveToFirst())
            {
                do{
                    getName=c.getString(0);
                    getEmail=c.getString(1);

                }while(c.moveToNext());
            }
            handler.close();
            Toast.makeText(getBaseContext(), "Name:"+getName+" Email:"+getEmail, Toast.LENGTH_LONG).show();
        } 

    });
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

    }

```

DatabaseHandler .Java

```
   package com.databasedemo;

   import android.content.ContentValues;
   import android.content.Context;
   import android.database.Cursor;
   import android.database.SQLException;
   import android.database.sqlite.SQLiteDatabase;
   import android.database.sqlite.SQLiteOpenHelper;
   import android.database.*;
        public class DataHandler {
   public static final String NAME="name";
   public static final String EMAIL="email";
   public static final String TABLE_NAME="mytable";
   public static final String DATA_BASE_NAME="mydatabase";
   public static final int DATABSE_VERSION=1;
     public static final String TABLE_CREATE="create table mytable(name text not null,email text        not null;)";
 DataBaseHelper dbhelper;
 Context ctx;
 SQLiteDatabase db;
  public DataHandler(Context ctx)
{
this.ctx=ctx;
dbhelper=new DataBaseHelper(ctx);
 }
   private static class DataBaseHelper extends SQLiteOpenHelper{

public DataBaseHelper(Context ctx)
{
    super(ctx,DATA_BASE_NAME,null,1);
} 

@Override
public void onCreate(SQLiteDatabase db) {
    try{
db.execSQL(TABLE_CREATE);

}
    catch(SQLException e)
    {
        e.printStackTrace();
    }
    }

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion , int newVersion) {

    db.execSQL("DROP TABLE IF EXISTS mytable");
    onCreate(db);
}
   }
   public DataHandler open()
  {
db=dbhelper.getWritableDatabase();
return this;
   }
  public void close()
  {
 dbhelper.close();
   }
  public long insertData(String name,String email){
 ContentValues content=new ContentValues();
 content.put(NAME,name);
 content.put(EMAIL, email);
 return db.insertOrThrow(TABLE_NAME, null, content);
   }
  public Cursor returnData()
  {
return db.query(TABLE_NAME,new String[]{NAME,EMAIL},null,null,null,null,null);
   }

   }

```

Below is activity\_main.xml

```
  <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:tools="http://schemas.android.com/tools"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:paddingBottom="@dimen/activity_vertical_margin"
   android:paddingLeft="@dimen/activity_horizontal_margin"
   android:paddingRight="@dimen/activity_horizontal_margin"
   android:paddingTop="@dimen/activity_vertical_margin"
   tools:context=".MainActivity" >

    <EditText
    android:id="@+id/email"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/name"
    android:layout_centerVertical="true"
    android:ems="10" 
    android:hint="Enter Email Here"/>

    <Button
    android:id="@+id/save"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/load"
    android:layout_below="@+id/email"
    android:layout_marginTop="14dp"
    android:text="Save" 
    android:minWidth="120dp"
    android:gravity="center"/>

    <Button
    android:id="@+id/load"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/save"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="26dp"
    android:text="Load"
    android:minWidth="120dp"
    android:gravity="center" />

    <EditText
    android:id="@+id/name"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="82dp"
    android:ems="10"
    android:hint="Enter Name Here" />

    </RelativeLayout>

```