String类题目总结

时间：2015-09-09 06:15:39 阅读：135 评论：0 收藏：0 [点我收藏+]

用到的Class和methods：

1. 类String

String s;

s.charAt(i);

2. 类Character: http://docs.oracle.com/javase/7/docs/api/java/lang/Character.html

Determines if the specified character is a letter or digit.

Return static boolean

toLowerCase(char ch)

Converts the character argument to lowercase using case mapping information from the UnicodeData file.

Return static char

3. 类StringBuilder：http://docs.oracle.com/javase/7/docs/api/java/lang/StringBuilder.html

append(char c)

Appends the string representation of the char argument to this sequence.

toString()

Returns a string representing the data in this sequence.

return String

原文：http://www.cnblogs.com/hygeia/p/4793476.html

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