public class ClassCastException
extends RuntimeException
Thrown to indicate that the code has attempted to cast an object to a subclass of which it is not an instance. For example, the following code generates a ClassCastException:
Object x = new Integer(0);
System.out.println((String)x);
我的程序中哪里违反了呢 ？？？？
看不懂啊 帮帮忙
extends RuntimeException
Thrown to indicate that the code has attempted to cast an object to a subclass of which it is not an instance. For example, the following code generates a ClassCastException:
Object x = new Integer(0);
System.out.println((String)x);
我的程序中哪里违反了呢 ？？？？
看不懂啊 帮帮忙
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