Java StringCharacterIterator previous()方法及实例

Java中 java.text .StringCharacterIterator类 的 previous() 方法是用来获取这个StringCharacterIterator要读取的前一个字符。该方法将该迭代器向后递减一个索引，并返回该前一个字符。

语法。

public char previous()

参数。此方法不接受任何参数。

返回值。该方法返回该StringCharacterIterator所要读取的前一个字符。

异常。此方法不抛出任何异常。

程序。

// Java program to demonstrate// the above method  import java.text.*;import java.util.*;  public class StringCharacterIteratorDemo {    public static void main(String[] args)    {          StringCharacterIterator stringCharacterIterator            = new StringCharacterIterator(                "GeeksForGeeks");          stringCharacterIterator.next();          System.out.println("Current character: "                           + stringCharacterIterator                                 .current());          System.out.println("Previous character: "                           + stringCharacterIterator                                 .previous());    }}

输出:

Current character: ePrevious character: G

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