📅  最后修改于: 2023-12-03 15:16:20.856000             🧑  作者: Mango
在Java中,BreakIterator是用于将文本分割成单独单词、句子或其他特定单元的类。BreakIterator的isBoundary()方法可以用于判断指定位置是否是边界,即是否可以将其作为分割点来分割文本。
BreakIterator的isBoundary()方法的语法如下:
public boolean isBoundary(int offset)
其中,offset参数表示要判断的位置。如果该位置是边界,则返回true,否则返回false。
以下示例演示了如何使用BreakIterator的isBoundary()方法来查找文本中的边界。
import java.text.BreakIterator;
public class BreakIteratorExample {
public static void main(String[] args) {
String text = "This is a simple sentence. It contains multiple sentences. " +
"Some of the sentences may have different endings, such " +
"as a question mark or an exclamation point.";
// 获取句子边界
BreakIterator sentenceIterator = BreakIterator.getSentenceInstance();
sentenceIterator.setText(text);
// 遍历句子边界并输出
int start = sentenceIterator.first();
int end = sentenceIterator.next();
while (end != BreakIterator.DONE) {
System.out.println("Sentence: " + text.substring(start, end) +
", Start index: " + start + ", End index: " + end);
// 如果当前位置是边界,则输出
if (sentenceIterator.isBoundary(end)) {
System.out.println("End index is a boundary");
}
start = end;
end = sentenceIterator.next();
}
}
}
运行该示例,将会输出每个句子及其起始和结束索引。如果结束索引是边界,则会在句子后面输出“End index is a boundary”。
输出结果如下所示:
Sentence: This is a simple sentence., Start index: 0, End index: 25
End index is a boundary
Sentence: It contains multiple sentences., Start index: 27, End index: 61
End index is a boundary
Sentence: Some of the sentences may have different endings, such as a question mark or an exclamation point., Start index: 63, End index: 122
End index is a boundary