Java 语法索引 ----- 抽象类(Abstract)

abstract class Shape
{
    public int x = 100, y = 100;
    public abstract int getArea();
}

class Rectangle extends Shape
{
    @Override
    public int getArea()
    {
        return x * y;
    }
}

参考文献： Java Quick Syntax Reference by Mikael Olsson

时间： 2024-10-13 10:29:20

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