NetBeans中的編譯錯誤

Question

知道為什么NetBeans 7中的此代碼將帶有刪除的行標記為“刪除”（刪除是客戶端軟件包中的類）嗎？

package client;

/**
 *
 * @author Arth
 */
public class Client_Main
{
     final String ORIGINAL_SEQUENCE =      "AAGCTGT"; 

         // Sample sequences demonstrating each type of DNA error
         final String MUTATION_SEQUENCE =      "AATCTGT"; 
         final String TRANSPOSITION_SEQUENCE = "AAGTCGT";
         final String INSERTION_SEQUENCE =     "AAGACTG"; 
         final String DELETION_SEQUENCE =      "AGCTGTA"; 

         final String SEQUENCE_A =      "AAAAACCCCCGGGGGTTTTT";
         final String SEQUENCE_B =      "AAAACACCCCGGGGGTTTTT";

         public void check()
         {
             Deletion d("1","2");
         }

}

該行：

Deletion d("1","2");

產生錯誤：

';' 是期待

Answer 1

此語法是非法的。 如果要創建新對象，則應使用就地初始化：

Deletion d = new Deletion("1", "2");

或在聲明后初始化：

Deletion d;
d = new Deletion("1", "2");

Answer 2

Deletion d = new Deletion("1","2");

Answer 3

您尚未真正提供足夠的信息，但請嘗試

Deletion d = new Deletion("1", "2");

Answer 4

另外，如果不分配 d ，則可以直接直接調用該對象，如下所示：

new Deletion("1", "2");