//
String type = "java.lang.Integer";
//
String val = "100";
//
String var = "num";
Demo demo = new Demo ();
demo.setKey(var);
demo.setType(type);
demo.setValue(val);
//
Integer num = Integer.valueOf(profileConfig.getValue());
System.out.println(num);
type ,?generic design can be used. Type becomes a generic type of the Demo class, and Value is a generic type directly, so you don't have to convert it when you use it.
reflection?
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