Java 基础教程:抽象类

[java]代码库

publicabstractclassTest{//抽象类定义
publicabstractvoiddoItByHand();//抽象方法定义
}//源代码片段来自云代码http://yuncode.net
			

public abstract class Drawing {
public abstract void drawDot(int x, int y);
public void drawLine(int x1, int y1, int x2, int y2) {
// draw using the drawDot() method repeatedly.
}
}//源代码片段来自云代码http://yuncode.net