Java BreakIterator current()方法及示例

java.text.BreakIterator 类的 current() 方法是用来获取一行字中最近的文本边界的索引。它提供了当前由BreakIterator指向的文本的偏移量。

语法

public abstract int current()

参数： 该方法不接受任何参数。

返回值： 该方法提供最近文本边界的 索引 。

下面是一些例子来说明 current() 方法。

例1 :

// Java program to demonstrate current() method
  
import java.text.*;
import java.util.*;
import java.io.*;
  
public class GFG {
    public static void main(String[] argv)
    {
        // creating and initializing integer with zero
        int current = 0, last = 0;
  
        // creating and initializing BreakIterator
        BreakIterator wb
            = BreakIterator.getWordInstance();
  
        // setting text for BreakIterator
        wb.setText("Code  Geeks");
  
        // getting the current text boundary
        current = wb.current();
  
        // display the result
        System.out.println(
            "current position "
            + "before calling next(): "
            + current);
  
        // calling next method
        last = wb.next();
  
        // getting the current text boundary
        current = wb.current();
  
        // display the result
        System.out.println(
            "\ncurrent position after"
            + " calling 1st next(): "
            + current);
  
        // calling next method
        last = wb.next();
  
        // getting the current text boundary
        current = wb.current();
  
        // display the result
        System.out.println(
            "\ncurrent position after"
            + " calling 2nd next(): "
            + current);
    }
}

输出:

current position before calling next(): 0

current position after calling 1st next(): 4

current position after calling 2nd next(): 6

例2 :

// Java program to demonstrate current() method
  
import java.text.*;
import java.util.*;
import java.io.*;
  
public class GFG {
    public static void main(String[] argv)
    {
        // creating and initializing integer with zero
        int current = 0, last = 0;
  
        // creating and initializing BreakIterator
        BreakIterator wb
            = BreakIterator.getWordInstance();
  
        // setting text for BreakIterator
        wb.setText("GeeksForGeeks");
  
        // getting the current text boundary
        current = wb.current();
  
        // display the result
        System.out.println(
            "current position "
            + "before calling next(): "
            + current);
  
        // calling next method
        last = wb.next();
  
        // getting the current text boundary
        current = wb.current();
  
        // display the result
        System.out.println(
            "\ncurrent position after"
            + " calling 1st next(): "
            + current);
  
        // calling next method
        last = wb.next();
  
        // getting the current text boundary
        current = wb.current();
  
        // display the result
        System.out.println(
            "\ncurrent position after"
            + " calling 2nd next(): "
            + current);
    }
}

输出:

current position before calling next(): 0

current position after calling 1st next(): 13

current position after calling 2nd next(): 13

参考资料: https://docs.oracle.com/javase/9/docs/api/java/text/BreakIterator.html#current-