이거 왜 오류뜸?

[ㅇㅇㅇ(122.32)]

package com.example.dasd;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
   
Button button=(Button)findViewById(R.id.button1);
button.setOnClickListener(new OnClickListener()
{
public void onClick(View v)
{
 Intent intent=new Intent(MainActivity.this, activity_second.class);
 startActivity(intent);
 
 
 
 Button button=(Button)findViewById(R.id.button2);
 button.setOnClickListener(new OnClickListener()
 {
  public void onClick(View v)
  {
   Intent intent=new Intent(MainActivity.this, activity_third.class);
   startActivity(intent);
  }
 }
}
});
    }
}