java320_1.java

项目实战

abstract class a{
	float obj;
    a(float obj1){
		obj=obj1;
	}			 
	abstract void add();
}
class b extends a{
	b(float obj1){
		super(obj1);
	}
	void add(){
		System.out.println();
		System.out.println("从华氏温度到摄氏温度的转换");
		System.out.println("**************************");
		System.out.println("华氏温度:"+obj);
		System.out.println("摄氏温度:"+(obj*9/5+32));
		System.out.println();
	}
	
}
class c extends a{
	c(float obj1){
		super(obj1);
	}
	void add(){
		System.out.println("从摄氏温度到华氏温度的转换");
		System.out.println("**************************");	
		System.out.println("摄氏温度:"+obj);
		System.out.println("华氏温度:"+(obj-32)*5/9);
		System.out.println();
	}
}
class d{
	public static void main(String[] args){
	b numobj=new b(100);
	numobj.add();
	c obj=new c(98.6f);
	obj.add();	
	}
}