jython and toString

Walter S. Leipold leipold at ace-net.com
Mon Oct 16 21:15:48 CEST 2006


toString() isn't supposed to be a static method.  When you call
x.toString(), you're accessing x's non-static version of toString(), which
is inherited from Object. 

-- Walt


ivansh (ishijak at gmail.com) wrote:
> For one java class (Hello) i use another (HelloPrinter) to build the
> string representation of the first one. When i've tried to use this
> from within jython,  HelloPrinter.toString(hello) call gives results
> like Object.toString() of hello has being called. The example below
> shows this behaviour.
> Could somebody explain this?
> 
> // Hello.java
> package jythontest;
> public class Hello {
> 	private String name;
> 	public Hello(String name)
> 	{
> 		this.name = name;
> 	}
> 	public String sayHello()
> 	{
> 		return "Hello, "+name;
> 	}
> }
> 
> // HelloPrinter.java
> package jythontest;
> public class HelloPrinter {
> 	public static String toString(Hello h)
> 	{
> 		return h.sayHello();
> 	}
> 
> 	public static String toMyString(Hello h)
> 	{
> 		return h.sayHello();
> 	}
> }
> 
> #  calljava.py
> from jythontest import *
> h = Hello("theName")
> print h
> print HelloPrinter.toString(h)
> print HelloPrinter.toMyString(h)
> 
> OUTPUT:
> jythontest.Hello at 523ca2   // GOOD
> jythontest.Hello at 523ca2   // WRONG
> Hello, theName                 // GOOD
> 
> 
> Jython 2.1 on java (JIT: null)
> 
> java version "1.5.0_03"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_03-b07)
> Java HotSpot(TM) Server VM (build 1.5.0_03-b07, mixed mode)
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 



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