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20 年
关于 JAVA paint(Graphics g) 实在是搞不懂,快要疯了!
大家看一下,以下两段代码有什么不同: 真是搞不懂,中间只是调用了一个函数,结果就会一个能画得出来,另一个却画不出来了。 下面是全部的源代码。共有两个 java 文件 =====TestPanel.java===== import java.awt.*; import javax.swing.*; import javax.swing ...
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