在Java语言中,下列()是正确的JDBC代码片断.A.PreparedStatementpstme=con.prepareStatement(“insertintoEMP(EMPNO,ENAME)values(?,)”);Pstmt.setInt(1,7);Pstmt.setString(2,”Admin”);B.PreparedStatementpstme=con.prepareStatement(
在Java语言中,下列()是正确的JDBC代码片断.
A.PreparedStatementpstme=con.prepareStatement(“insertintoEMP
(EMPNO,ENAME)values(?,)”);
Pstmt.setInt(1,7);
Pstmt.setString(2,”Admin”);
B.PreparedStatementpstme=con.prepareStatement(“insertintoEMP
(EMPNO,ENAME)values(?,)”);
Pstmt.setInt(1,”7”);
Pstmt.setString(2,”Admin”);
C.Statementstmt=con.createStatement(“insertintoEMP(EMPNO,ENAME)values(7,’Adnmin’));
D.PreparedStatemenstmtl=con.prepareStatement(“insertintoEMP(EMPNO,ENAME)values(7,’Amin’));
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应该选哪个?并且说明为什么.
D选项错在哪了?