樹圖檢索HashMap的值而不是樹映射值Java

Question

我有三個嵌套樹映射的類。我有一個方法來在每個映射中放入值以及一種方法來檢索這些值。我的問題是，與其檢索值在控制檯輸出是這樣的：project.Verbal@5c647e05

我怎麼輸入值：

Verbal square = new Verbal(); 
     square.addVerbal("arbol1", square.addInVerbal("arbol2", square.addInInVerbal("atributo name", "attributeValue"))); 

如何檢索值：

System.out.println(square.getVerbal("arbol1").getInVerbal("arbol2").getInInVerbal("atributo name")); 

父圖：

import java.util.TreeMap; 

public class Verbal extends InVerbal { 

    private TreeMap<String, InVerbal> squareRPM = new TreeMap<String, InVerbal>(); 

    public TreeMap<String, InVerbal> getSquareRPM() { 
     return squareRPM; 
    } 

    public void setSquareRPM(TreeMap<String, InVerbal> squareRPM) { 
     this.squareRPM = squareRPM; 
    } 


//Put items in the treemap 
    public Verbal addVerbal(String key, InVerbal component){ 

     squareRPM.put(key, component); 

     return this; 

    } 

//Get items in the treemap 
    public Verbal getVerbal(String key){ 

      squareRPM.get(key); 

      return this; 
    } 
} 

父內部的地圖

import java.util.TreeMap; 

public class InVerbal extends InInVerbal { 

    private TreeMap<String, InInVerbal> component = new TreeMap<String, InInVerbal>(); 

    public TreeMap<String, InInVerbal> getComponent() { 
     return component; 
    } 

    public void setComponent(TreeMap<String, InInVerbal> component) { 
     this.component = component; 
    } 

//Put items in the treemap 
    public InVerbal addInVerbal(String key, InInVerbal attributes){ 

     component.put(key, attributes); 

     return this; 

    } 
//Get items in the treemap 
    public InVerbal getInVerbal(String key){ 

     component.get(key); 

     return this; 
    } 
} 

內蒙古地圖>內部內地圖>裏面父

import java.util.TreeMap; 

public class InInVerbal { 

    private TreeMap<String, String> attribute = new TreeMap<String, String>(); 

    public TreeMap<String, String> getAttribute() { 
     return attribute; 
    } 

    public void setAttribute(TreeMap<String, String> attribute) { 
     this.attribute = attribute; 
    } 

//Put items in the treemap 
    public InInVerbal addInInVerbal(String attributeName, String attributeValue){ 

    attribute.put(attributeName, attributeValue); 

    return this; 

    } 

//Get items in the treemap 
    public InInVerbal getInInVerbal(String attributeName){ 

    attribute.get(attributeName); 

    return this; 

    }   
} 

預先感謝您。

Answer 1

我認爲你需要覆蓋Object類的toString特定類中（）方法，因爲它實際上是調用該對象類的toString（），而打印值。

這樣的：

class Car { 
    public String getCarName() { 
     return carName; 
    } 

    public void setCarName(String carName) { 
     this.carName = carName; 
    } 

    public Car(String carName) { 
     this.carName = carName; 
    } 

    @Override 
    public String toString() { 
     return "Car{" + 
       "carName='" + carName + '\'' + 
       '}'; 
    } 

    String carName; 
} 

Answer 2

您正在調用默認的Object's toString()方法。覆蓋它到你想要的輸出。

例如

@Override 
public String toString() { 
    return this.squareRPM.toString(); 
}