Instantiate unknown class at runtime and call the object's methods : Object « Reflection « Java






  1. Java
  2. Reflection
  3. Object

Instantiate unknown class at runtime and call the object's methods

 
import java.lang.reflect.Method;

public class Main {
  public static void main(String[] args) throws Exception {
    Class myclass = Class.forName("java.lang.String");

    Method[] methods = myclass.getMethods();
    //Object object = myclass.newInstance();

    for (int i = 0; i < methods.length; i++) {
      System.out.println(methods[i].getName());
      //System.out.println(methods[i].invoke(object));
    }
  }
}
/*
hashCode
compareTo
compareTo
indexOf
indexOf
indexOf
indexOf
equals
toString
charAt
codePointAt
codePointBefore
codePointCount
compareToIgnoreCase
concat
contains
contentEquals
contentEquals
copyValueOf
copyValueOf
endsWith
equalsIgnoreCase
format
format
getBytes
getBytes
getBytes
getBytes
getChars
intern
isEmpty
lastIndexOf
lastIndexOf
lastIndexOf
lastIndexOf
length
matches
offsetByCodePoints
regionMatches
regionMatches
replace
replace
replaceAll
replaceFirst
split
split
startsWith
startsWith
subSequence
substring
substring
toCharArray
toLowerCase
toLowerCase
toUpperCase
toUpperCase
trim
valueOf
valueOf
valueOf
valueOf
valueOf
valueOf
valueOf
valueOf
valueOf
getClass
wait
wait
wait
notify
notifyAll

*/








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