Java-StringCharacterIterator简单的用法

StringCharacterIterator iterator = new StringCharacterIterator("hello world");

//迭代元素
while (iterator.current() != StringCharacterIterator.DONE) {
System.out.print(iterator.current());
iterator.next();
}

//从前往后遍历文本
for(char character=iterator.first();character!=StringCharacterIterator.DONE;character=iterator.next())
{
System.out.print(character);
};

System.out.println("");

//从后往前遍历文本
for(char character=iterator.last();character!=StringCharacterIterator.DONE;character=iterator.previous())
{
System.out.print(character);
}

//获取开头索引
System.out.println(iterator.getBeginIndex());
//获取结束索引
System.out.println(iterator.getEndIndex());
//获取下一个元素
System.out.println(iterator.next());
//获取第一个元素
System.out.println(iterator.first());
//获取当前元素
System.out.println(iterator.current());
//获取前一个字符
System.out.println(iterator.previous());