Topic: java.awt.Component类里的paint()为何是空函数？

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1.java.awt.Component类里的paint()为何是空函数？ Copy to clipboard
Posted by: bluedest
Posted on: 2004-09-27 14:37

我查看了jdk1.4.2自带的源代码，
有如下函数：
public void update(Graphics g)
{
paintPresent;
}

public void paint(Graphics g)
{
}

为什么paint()能为空啊，那组件如何画？
2.Re:java.awt.Component类里的paint()为何是空函数？ [Re: bluedest] Copy to clipboard
Posted by: elysium922
Posted on: 2004-10-02 00:44

子类继承以后各自实现绘制逻辑

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