● 下面是一段 javabean 程序,该程序的运行结果是 (62) 。public class NullTest{public static void main(String[] args){int M = 0;String str = null;StringBuffer sb = new StringBuffer(“= “);sb.append(str);sb.append(M++);System.out.println(sb.toString());}}(62)A.=nullB.=null0C.=null1D.=nullM

● 下面是一段 javabean 程序,该程序的运行结果是 (62) 。

public class NullTest

{

public static void main(String[] args)

{

int M = 0;

String str = null;

StringBuffer sb = new StringBuffer(“= “);

sb.append(str);

sb.append(M++);

System.out.println(sb.toString());

}

}

(62)

A.=null

B.=null0

C.=null1

D.=nullM


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