代码解释:Exception occurred while executing: java.lang.NumberFormatException: For input string: "-size"
时间: 2024-01-25 07:13:19 浏览: 31
这个错误是Java中的NumberFormatException异常,它表示在将字符串转换为数字时发生了错误。具体来说,这个错误是因为你尝试将一个非数字的字符串("-size")转换为数字。
在Java中,可以使用Integer.parseInt()方法将字符串转换为整数。但是,如果字符串不是有效的数字格式,就会抛出NumberFormatException异常。
要解决这个问题,你需要确保将一个有效的数字字符串传递给parseInt()方法。如果你想将"-size"转换为数字,你需要先处理这个字符串,将其转换为一个有效的数字格式。
以下是一个示例代码,演示了如何处理这个异常:
```java
try {
String str = "-size";
int num = Integer.parseInt(str);
System.out.println("转换后的数字为:" + num);
} catch (NumberFormatException e) {
System.out.println("无法将字符串转换为数字:" + e.getMessage());
}
```
在上面的代码中,我们使用try-catch块来捕获NumberFormatException异常。如果发生异常,我们打印出错误消息。否则,我们打印出成功转换后的数字。
希望这个解释对你有帮助!如果你有任何其他问题,请随时提问。
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