Temp Converter Class com Construtor

public with sharing class TempConverterWithConstructor {
    private Decimal celsius;

    public TempConverterWithConstructor(){
        System.debug('Olá Mundo');
    }

    public TempConverterWithConstructor(String msg){
        System.debug(msg);
    }

    public TempConverterWithConstructor(Decimal temp){
        this.celsius = temp;
    }


    public Decimal converteTemp(){
        return this.celsius*1.8 + 32;
    }

}

//ANONYMOUS
/*
 * TempConverterWithConstructor tcwc = new TempConverterWithConstructor(22);

System.debug(tcwc.converteTemp());
*/