//CharacterOp.java
//Character類提供的常用方法
public class CharacterOp 
{
	public static void main(String args[]) 
	{
		Character c1 = new Character('a');
		Character c2 = new Character('a');
		Character c3 = new Character('b');
		int d = c1.compareTo(c3);
		if (d == 0) 
			System.out.println("c1等于c3");
		else if (d < 0) 
			System.out.println("c1小于c3");
		else if (d > 0) 
			System.out.println("c1大于c3");
		System.out.println("c1"+ ((c1.equals(c2)) ? "等于" : 
		   "不等于")+ "c2");
		System.out.println(c1.toString() + "是"+ 
		   (Character.isUpperCase(c1.charValue()) ? "大寫" : "小寫"));
	}
}