for example, the parent class of a normal class IOException is as follows:
Class<?> c = IOException.class;
System.out.println("IOException:"+c.getSuperclass());but I implement this function: the IOException is saved as a string, and then how do I find the parent class of the class through that string? The last line of the following code indicates an error and cannot be implemented.
for guidance, thank you!
Class<?> clazz = null;
try {
clazz = Class.forName("java.lang.Exception");
} catch (ClassNotFoundException e) {
System.err.println("can not load this class");
}
System.out.println(clazz.getSuperclass().getName());Update:
public static String loadClass(String className) {
Objects.requireNonNull(className);
Class<?> clazz = null;
try {
clazz = Class.forName(className);
return clazz.getSuperclass().getName();
} catch (ClassNotFoundException e) {
return "";
}
}just do this:
System.out.println (Class.forName ("java.io.IOException"). GetSuperclass ());
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