北京网站优化体验,英文网站建设解决方案,中国建设网银,搜索引擎排名竞价CharSequence是char类型的一个可读序列#xff0c;它本身是一个接口#xff0c;CharBuffer、String、StringBuffer、StringBuilder这个四个类实现了这个接口。此接口对于不同种类的char序列提供统一的只读访问以下是这个函数的API 它只定义了四个方法 /*** This interface re…CharSequence是char类型的一个可读序列它本身是一个接口CharBuffer、String、StringBuffer、StringBuilder这个四个类实现了这个接口。此接口对于不同种类的char序列提供统一的只读访问以下是这个函数的API 它只定义了四个方法 /*** This interface represents an ordered set of characters and defines the* methods to probe them.*/
public interface CharSequence {/*** Returns the number of characters in this sequence.** return the number of characters.*/public int length();/*** Returns the character at the specified index, with the first character* having index zero.** param index* the index of the character to return.* return the requested character.* throws IndexOutOfBoundsException* if {code index 0} or {code index} is greater than the* length of this sequence.*/public char charAt(int index);/*** Returns a {code CharSequence} from the {code start} index (inclusive)* to the {code end} index (exclusive) of this sequence.** param start* the start offset of the sub-sequence. It is inclusive, that* is, the index of the first character that is included in the* sub-sequence.* param end* the end offset of the sub-sequence. It is exclusive, that is,* the index of the first character after those that are included* in the sub-sequence* return the requested sub-sequence.* throws IndexOutOfBoundsException* if {code start 0}, {code end 0}, {code start end},* or if {code start} or {code end} are greater than the* length of this sequence.*/public CharSequence subSequence(int start, int end);/*** Returns a string with the same characters in the same order as in this* sequence.** return a string based on this sequence.*/public String toString();
}
