CODEWITHSUNDEEP
groovy
Jarrel Costiniano
Jarrel Costiniano

Reputation: 27

How to print class attributes in Groovy?

Resize Class 

class Resize {

    int width = 12

    int length = 10

}

I have this method to print data from Resize class

 public String print(){
    Resize resize = new Resize()
    println(resize)
 }

How to dynamically print values like this? I mean what if I don't know the key names.

[12, 10]

Upvotes: 1

Views: 758

Answers (2)

Mike W
Mike W

Reputation: 3932

You can annotate the class with ToString

e.g. 

import groovy.transform.ToString

@ToString(includeNames=true)
class Resize { ...

If the output from ToString isn't suitable you could try:

class Resize {   

    int width = 12      
    int length = 10 

    String toString() {
        properties.findAll{it.key != 'class'}.collect{ it.value }
    }
}

Upvotes: 1

dsharew
dsharew

Reputation: 10665

You can write a simple util function like this:

class Resize {
    int width = 12;
    int length = 10;

    String getDimensionsAsString(){

        StringBuilder sb = new StringBuilder();

        sb.append("[");

        sb.append(width);
        sb.append(",");

        sb.append(length);

        sb.append("]");

        return sb.toString();

    }

}

println new Resize().getDimensionsAsString();

Output: 

[12,10]

Upvotes: 0

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