给定下列代码，字符串s的长度是_____。char []chars = {'中','国','π','α','M','N'};String s = new String(chars);System.out.println(s.length());
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下面代码的输出结果是0。String s = new String();System.out.println(s.length());
A. 对
B. 错
声明一个有5个int元素的数组，正确的是
A. int intArray = new int[5];
B. int intArray = new int(5);
C. int[] intArray = new int[5];
D. int[5] intArray = new int[5];
下面声明正确的是：
A. Object obj = new Object();
B. Object[] obj = new Object();
C. Object obj[] = new Object();
D. Object[] obj = new Object[];
下面代码的输出结果为：String[] numbers = {"one","two","three"};System.out.println(numbers[3] + " " + numbers[2] + " " + numbers[1]);
A. one two three
B. three two one
C. 产生编译错误
D. 运行时将抛出异常
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