ordenar y filtrar hashmap multidimensional

[abulon81]

Wenas puedes usar de esta forma la clase producto

Código:

import java.util.Comparator;
import com.test.Person;

public class Producto {

	private long id;
	private String marca;
	private String rubro;
	private String descripcion;
	private float precio;
    
	public Producto(){
	}
	
	public Producto(long id,String marca,String rubro,String desc,float price){
		this.id=id;
		this.marca=marca;
		this.rubro=rubro;
		this.descripcion=desc;
		this.precio=price;
	}

	public String getDescripcion() {
		return descripcion;
	}

	public void setDescripcion(String descripcion) {
		this.descripcion = descripcion;
	}

	public long getId() {
		return id;
	}

	public void setId(long id) {
		this.id = id;
	}

	public String getMarca() {
		return marca;
	}

	public void setMarca(String marca) {
		this.marca = marca;
	}

	public float getPrecio() {
		return precio;
	}

	public void setPrecio(float precio) {
		this.precio = precio;
	}

	public String getRubro() {
		return rubro;
	}

	public void setRubro(String rubro) {
		this.rubro = rubro;
	}

	 public String toString() {
	        //return id + " " + marca + " " + rubro + " " +descripcion + " " +precio;
	        return String.format("%-16.20s %-30.30s %-20.30s %-25.30s %-20.30s",id,marca,rubro,descripcion,precio);
	    }
	
	 // Comparator
    public static class CompId implements Comparator<Producto> {
        
        public int compare(Producto arg0, Producto arg1) {
            return (int) (arg0.id - arg1.id);
        }
    }

    public static class CompMarca implements Comparator<Producto> {
        
    	public int compare(Producto arg0,Producto arg1) {
    		// TODO Auto-generated method stub
    		return arg0.marca.compareTo(arg1.getMarca());
    	}
    }
    
    public static class CompRubro implements Comparator<Producto> {
        private boolean orderby=false;
        public CompRubro(boolean desc){
        	this.orderby=desc;
        }
    	public int compare(Producto arg0,Producto arg1) {
    		// TODO Auto-generated method stub
    		int i=0;
    		if(orderby){
    			i=arg0.rubro.compareTo(arg1.getRubro());
    		}else{
    			i=arg1.rubro.compareTo(arg0.getRubro());
    		}
    		return i;//arg0.rubro.compareTo(arg1.getRubro());
    	}
    }
    
    public static class CompPrice implements Comparator<Producto> {
    	private float mod = 1;
        public CompPrice(boolean desc) {
            if (desc) mod =-1;
        }
    	public int compare(Producto arg0,Producto arg1) {
    		// TODO Auto-generated method stub
    		return (int) ((int) mod*(arg0.precio - arg1.precio));
    	}
    }
	
}

Y en el main usar esto

Código:

import java.util.ArrayList;
import java.util.List;
import java.util.Collections;
import java.util.Comparator;

import com.test.Person;

public class testProductosort {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Producto p = null;
		Producto p1 = new Producto();
		
		List<Producto> lstpro = new ArrayList<Producto>();
		
		lstpro.add(new Producto(4,"palmolive","jabon","jabon bano",5.80f));
		lstpro.add(new Producto(9,"dove","jabon","jabon bano",7.80f));
		lstpro.add(new Producto(1,"escudo","jabon","jabon bano",8.50f));
		lstpro.add(new Producto(5,"palma","jabon","jabon bano",10.50f));
		lstpro.add(new Producto(2,"palma","shampo","jabon bano",10.50f));
		lstpro.add(new Producto(6,"acros","lavadora","lavadora 11kgs",89.50f));
		lstpro.add(new Producto(8,"whirpol","lavadora","lavadora 15kgs",150.50f));
		lstpro.add(new Producto(3,"samsung","lavadora","lavadora 15kgs",148.50f));
		lstpro.add(new Producto(3,"acros","estufa","estufa 4 quemadores",248.50f));
		
		System.out.println("-----ANTES DE ORDENAR----");
		System.out.println(String.format("%-16.20s %-30.30s %-20.30s %-25.30s %-20.30s","ID","MARCA","RUBRO","DESCRIPCION","PRECIO")+"\n");
	    for (Producto pr : lstpro) {
	        System.out.println(pr.toString());
	    }
		
	    System.out.println("-----DESPUES DE ORDENAR BY ID----");
		Collections.sort(lstpro,new Producto.CompId());
		System.out.println(String.format("%-16.20s %-30.30s %-20.30s %-25.30s %-20.30s","ID","MARCA","RUBRO","DESCRIPCION","PRECIO")+"\n");
	    for (Producto pr : lstpro) {
	        System.out.println(pr.toString());
	    }
		
	    System.out.println("-----DESPUES DE ORDENAR BY MARCA----");
	    Collections.sort(lstpro,new Producto.CompMarca());
	    System.out.println(String.format("%-16.20s %-30.30s %-20.30s %-25.30s %-20.30s","ID","MARCA","RUBRO","DESCRIPCION","PRECIO")+"\n");
	    for (Producto pr : lstpro) {
	        System.out.println(pr.toString());
	    }
	    
	    
	    System.out.println("-----DESPUES DE ORDENAR BY PRECIO ASC----");
	    Collections.sort(lstpro,new Producto.CompPrice(false));
	    System.out.println(String.format("%-16.20s %-30.30s %-20.30s %-25.30s %-20.30s","ID","MARCA","RUBRO","DESCRIPCION","PRECIO")+"\n");
	    for (Producto pr : lstpro) {
	        System.out.println(pr.toString());
	    }
	    
	    
	    System.out.println("-----DESPUES DE ORDENAR BY PRECIO DESC----");
	    Collections.sort(lstpro,new Producto.CompPrice(true));
	    System.out.println(String.format("%-16.20s %-30.30s %-20.30s %-25.30s %-20.30s","ID","MARCA","RUBRO","DESCRIPCION","PRECIO")+"\n");
	    for (Producto pr : lstpro) {
	        System.out.println(pr.toString());
	    }
	    
	    
	    System.out.println("-----DESPUES DE ORDENAR BY RUBRO ASC----");
	    Collections.sort(lstpro,new Producto.CompRubro(false));
	    System.out.println(String.format("%-16.20s %-30.30s %-20.30s %-25.30s %-20.30s","ID","MARCA","RUBRO","DESCRIPCION","PRECIO")+"\n");
	    for (Producto pr : lstpro) {
	        System.out.println(pr.toString());
	    }
	    
	    
	    System.out.println("-----DESPUES DE ORDENAR BY RUBRO DESC----");
	    Collections.sort(lstpro,new Producto.CompRubro(true));
	    System.out.println(String.format("%-16.20s %-30.30s %-20.30s %-25.30s %-20.30s","ID","MARCA","RUBRO","DESCRIPCION","PRECIO")+"\n");
	    for (Producto pr : lstpro) {
	        System.out.println(pr.toString());
	    }
	}

}

Saludos, espero te oriente como dijo el Profe