Calling functions with variables

Processing Beginners
8

Hello,

Behind the scenes:
processing/core/src/processing/core/PApplet.java at master · processing/processing · GitHub

import java.lang.reflect.*;

 /**
   * Call a method in the current class based on its name.
   * <p/>
   * Note that the function being called must be public. Inside the PDE,
   * 'public' is automatically added, but when used without the preprocessor,
   * (like from Eclipse) you'll have to do it yourself.
   */
  public void method(String name) {
    try {
      Method method = getClass().getMethod(name, new Class[] {});
      method.invoke(this, new Object[] { });

    } catch (IllegalArgumentException e) {
      e.printStackTrace();
    } catch (IllegalAccessException e) {
      e.printStackTrace();
    } catch (InvocationTargetException e) {
      e.getTargetException().printStackTrace();
    } catch (NoSuchMethodException nsme) {
      System.err.println("There is no public " + name + "() method " +
                         "in the class " + getClass().getName());
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

:)

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