How to print value of a hashmap?

Question

When I execute the below code:

map.forEach((key, value) -> System.out.println(key + ":" + value));

I get 15234:[com.org.myprj.Dashboard@18a6be14] as sysout.

How to I get object value in hashmap? Here object is a row inserted in arraylist.

Take a look at duplicate question (linked at top of this page - you may need to refresh it to see it). In short, override `public String toString(){..}` method inside `Dashboard` class to generate string which you want to see while printing `Dashboard` instance in sysout. — Pshemo, Apr 30 '20 at 11:13

score 1 · Accepted Answer · edited Apr 30 '20 at 11:18

1

implement overridden toString method in object

example

class Dashboard{   
    private double re, im; 

    public Dashboard(double re, double im) { 
        this.re = re; 
        this.im = im; 
    } 

    @Override
    public String toString() { 
        return String.format(re + " + i" + im); 
    }  
}

edited Apr 30 '20 at 11:18

Pshemo

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answered Apr 30 '20 at 11:12

nikhil

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1

I didnt get you – Aziz Apr 30 '20 at 11:13
@Aziz... i have updated answer..kindly check – nikhil Apr 30 '20 at 11:15
Why `return String.format(re + " + i" + im);`? Why not `return re + " + i" + im;`? – Pshemo Apr 30 '20 at 11:17
@Pshemo.. Thanks for input.. that was one of the example... OP can use his own version on how he want to see data... – nikhil Apr 30 '20 at 11:20

How to print value of a hashmap?

1 Answers1