Java如何将段落分成句子？
本示例说明如何使用BreakIterator.getSentenceInstance()来将段落分为组成该段落的句子。要获取BreakIterator实例，我们调用getSentenceInstance()factory方法并传递语言环境信息。
在该count(BreakIteratorbi,Stringsource)方法中，我们迭代中断以提取组成该段落的句子，该段落的值存储在paragraph变量中。
package org.nhooo.example.text;
import java.text.BreakIterator;
import java.util.Locale;
public class BreakSentenceExample {
public static void main(String[] args) {
String paragraph =
"Line boundary analysis determines where a text " +
"string can be broken when line-wrapping. The " +
"mechanism correctly handles punctuation and " +
"hyphenated words. Actual line breaking needs to " +
"also consider the available line width and is " +
"handled by higher-level software. ";
BreakIterator iterator = BreakIterator.getSentenceInstance(Locale.US);
int sentences = count(iterator, paragraph);
System.out.println("Number of sentences: " + sentences);
}
private static int count(BreakIterator bi, String source) {
int counter = 0;
bi.setText(source);
int lastIndex = bi.first();
while (lastIndex != BreakIterator.DONE) {
int firstIndex = lastIndex;
lastIndex = bi.next();
if (lastIndex != BreakIterator.DONE) {
String sentence = source.substring(firstIndex, lastIndex);
System.out.println("sentence = " + sentence);
counter++;
}
}
return counter;
}
}我们的程序将在控制台屏幕上打印以下结果：
sentence = Line boundary analysis determines where a text string can be broken when line-wrapping. sentence = The mechanism correctly handles punctuation and hyphenated words. sentence = Actual line breaking needs to also consider the available line width and is handled by higher-level software. Number of sentences: 3
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