interfacecalcul.java

来自「介绍了java的一些应用」· Java 代码 · 共 51 行

/*
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 * and open the template in the editor.
 */

package InterfaceCalculator;

/**
 *
 * @author liuwei
 */
interface addtion{
    public void add(double a,double b);
}
interface subtraction{
    public double minus(double a,double b);
}
abstract class calcula{
    abstract public double multiply(double a,double b);
    abstract public double division(double a,double b);
} 
class intercalcul extends calcula 
        implements addtion,subtraction{
//int a,b;
public double add(double a,double b);{
    double c;
    c=a+b;
    return c;
}
 public double minus(double a,double b);{
    return (a-b); 
 }
public double multiply(double a,double b);{
    return a*b;
} 
public double division(double a,double b);{
    return a/b;
}

    public void add(double a, double b) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

}
public class interfacecalcul{
  public static void main(String[] args){
    intercalcul cal=new intercalcul();
    System.out.println(cal.add(5.2,6.2));
}  
}