我的語法有什么問題？

Question

Eclipse給出了一些特定代碼行的錯誤：

此行有多個標記

- Syntax error, insert ")" to complete 
 ConstructorDeclaration
- Syntax error, insert "}" to complete ClassBody
- Syntax error, insert ";" to complete 
 ConstructorDeclaration
- Syntax error, insert ";" to complete Statement
- Syntax error, insert ")" to complete 
 MethodInvocation

這條線是：

setOnClickListener(new View.OnClickListener(); {

而在另一條線上我得到錯誤

此行有多個標記

- Syntax error on token ")", delete 
 this token
- Syntax error on token "(", ; expected

for line：public void onClick（View v）; {

繼承人活動2.java：

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



public class activity2 extends Activity{

    /** Called when the activity is first created. */
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main2);

        Button next = (Button) findViewById(R.id.Back);
        next.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                Intent intent = new Intent();
                setResult(RESULT_OK, intent);
                finish();
            }
            Button sound = (Button) findViewById(R.id.sound);
            setOnClickListener(new View.OnClickListener(); {
                @Override
                public void onClick(View v); {
                    MediaPlayer mp = MediaPlayer.create(TestSonido.this, R.raw.whippingsound);  
                    mp.start();
                }
            }
            ;

    ;
}}

Answer 1

這個：

            setOnClickListener(new View.OnClickListener(); {
                @Override
                public void onClick(View v); {
                    MediaPlayer mp = MediaPlayer.create(TestSonido.this, R.raw.whippingsound);  
                    mp.start();
                }
            }

應該這樣：

            setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    MediaPlayer mp = MediaPlayer.create(TestSonido.this, R.raw.whippingsound);  
                    mp.start();
                }
            })

（在內部類的內容之前沒有分號;並且，在函數調用結束時是的是右括號）。

Answer 2

setOnClickListener(new View.OnClickListener(); {

=>

setOnClickListener(new View.OnClickListener() {