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());