Button link, nothing wrong but [duplicate]

This question is an exact duplicate of:

• The button for a 4th link does't work 1 answer

this page doesn't show anything any errors, it is a button that is linked to another page "arabianangelfish.xml", in the past, it was like this:

package com.d.di;

import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;

public class PageFish extends Activity {

    Button fishlink;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.fish);
    }
}

After that, some people said that it needs a click listener to a button, but it didn't work

package com.d.di;

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 PageFish extends Activity {
    Button fishlink;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.fish);
        fishlink = (Button) findViewById(R.id.arabianangelfish);
        fishlink.setOnClickListener(new OnClickListener() {
            public void OnClick(View v) {
                Intent intent = new Intent(PageFish.this,
                        PageArabianangelfishies.class);
                startActivity(intent);
            }

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

            }
        });
    }
}