class CharOpDemo{
	public static void main(String args[]){	
		char ch;
		ch='A';
		System.out.println("The first ch is  "+ ch);
		ch++;                                   //對ch進行遞增操作
		System.out.println("The second ch is  "+ch);
		ch=90;                                  //對ch重新賦值
		System.out.println("The third ch is   "+ch);		
	}
}