机器人r无法解决

作者: 没身份别烦我
发布时间: 2024-06-13 06:43:19 (1月前)
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产品你是狗 | 2019-08-31 10-32

<div class =“post-text”itemprop =“text”> <pre> <code> public void method1 (int x) { if (x == 1) { try { Robot r = new Robot(); // R is defined in the try block. It is not visible outside of this block. } catch (AWTException e) { // TODO Auto-generated catch block e.printStackTrace(); } r.mouseMove(50,50); // R is not defined anymore here </code> </pre> <P> 替换为 </p> <pre> <code> public void method1 (int x) { if (x == 1) { try { Robot r = new Robot(); r.mouseMove(50,50); } catch (AWTException e) { // TODO Auto-generated catch block e.printStackTrace(); } </code> </pre> </DIV>

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拥有小太阳的向日葵 | 2019-08-31 10-32

<div class =“post-text”itemprop =“text”> <P> 它应该是： </p> <pre> <code> public void method1 (int x) { Robot r = null; if (x == 1) { try { r = new Robot(); } catch (AWTException e) { // TODO Auto-generated catch block e.printStackTrace(); return; } r.mouseMove(50,50); </code> </pre> </DIV>

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