题目内容

The term commonly is used to refer to a string that is part of another string.(术语___通常指的是另一个字符串的一部分)

A. strand (链)
B. substring(子串)
C. character fragment (字符片段)
D. nested string (嵌套的字符串)

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What will be printed after the following code is executed?(下列代码执行后打印的结果是?)String str = "abc456"; int m = 0;while ( m < 6 ){if (Character.isLetter(str.charAt(m))) System.out.print(Character.toUpperCase(str.charAt(m)));m++;}

A. abc456
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