Java中的 BreakIterator isBoundary() 方法及示例

Java.text.BreakIterator类的isBoundary()方法用于检查传递的偏移量是否为边界。

句法：

public boolean isBoundary(int offset)

参数：该方法以偏移量为参数，用于检查是否为边界。

返回值：如果传递的偏移量是边界，则此方法提供true ，否则提供false 。

以下是说明isBoundary()方法的示例：

示例 1：

// Java program to demonstrate isBoundary() method
  
import java.text.*;
import java.util.*;
import java.io.*;
  
public class GFG {
    public static void main(String[] argv)
    {
        // creating and initializing BreakIterator
        BreakIterator wb
            = BreakIterator.getWordInstance();
  
        // setting text for BreakIterator
        wb.setText("Code  Geeks");
  
        // checking for the boundary
        // by using isBoundary() method
        boolean status = wb.isBoundary(0);
  
        // display the result
        if (status)
            System.out.println("offset is a boundary");
        else
            System.out.println("offset is not a boundary");
    }
}

输出：

offset is a boundary

示例 2：

// Java program to demonstrate isBoundary() method
  
import java.text.*;
import java.util.*;
import java.io.*;
  
public class GFG {
    public static void main(String[] argv)
    {
        // creating and initializing BreakIterator
        BreakIterator wb
            = BreakIterator.getWordInstance();
  
        // setting text for BreakIterator
        wb.setText("Code  Geeks");
  
        // checking for the boundary
        // by using isBoundary() method
        boolean status = wb.isBoundary(2);
  
        // display the result
        if (status)
            System.out.println("offset is a boundary");
        else
            System.out.println("offset is not a boundary");
    }
}

输出：

offset is not a boundary

参考： https://docs.oracle.com/javase/9/docs/api/ Java/text/BreakIterator.html#isBoundary-int-