Java Reflection - Java Method.getParameterTypes()

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Syntax

Method.getParameterTypes() has the following syntax.

public Class <?>[] getParameterTypes()

Example

In the following code shows how to use Method.getParameterTypes() method.

import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
/*w  ww  .j  a  va2  s  .  co m*/
public class Main{
  public static void main(String[] args) {
    Method[] methods = java.lang.Integer.class.getDeclaredMethods();

    for (int i = 0; i < methods.length; i++) {
      Method m = methods[i];
      Class retType = m.getReturnType();
      Class[] paramTypes = m.getParameterTypes();
      String name = m.getName();
      System.out.print(Modifier.toString(m.getModifiers()));
      System.out.print(" " + retType.getName() + " " + name + "(");
      for (int j = 0; j < paramTypes.length; j++) {
        if (j > 0)
          System.out.print(", ");
        System.out.print(paramTypes[j].getName());
      }
      System.out.println(");");
    }
  }
}

The output:

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