Groovy - Map toMapString(int size) method

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Description

Groovy Map toMapString(int size) method returns the string representation of the map. String representation is limited by maxSize appended with ....

Syntax

public Map toMapString(int size)

Parameters

size − stop after approximately this many characters and append '...'

Return Value

String representation of the map.

Example - Getting String representation of a Map of String and String

Following is an example of the usage of this method −

main.groovy

// define a map
def map = ["A" : "Apple","B" : "Banana","C": "Carrot", "P":"Peach"] 

//get string representation of the Map limited to 10 characters
def result = map.toMapString(10)

// print String
print(result)

Output

When we run the above program, we will get the following result −

[A:Apple, B:Banana, ...]

Example - Getting String representation of a Map of Integer and Integer

Following is an example of the usage of this method −

main.groovy

// define a map
def map = [1: 11, 2 : 12, 3 : 13, 4: 14, 5: 15] 

// get string representation of the Map limited to 10 characters
def result = map.toMapString(10)

// print String
print(result)

Output

When we run the above program, we will get the following result −

[1:11, 2:12, ...]

Example - Getting String representation of a Map of Integer and Integer

Following is an example of the usage of this method −

main.groovy

// define a map
def map = [1 : new Student(1, "Julie"), 2 : new Student(2, "Robert"),3: new Student(3,"Adam")] 

// get string representation of the Map limited to 10 characters
def result = map.toMapString(10)

// print String
print(result)

class Student{
   int rollNo
   String name

   Student(int rollNo, String name){
      this.rollNo = rollNo
      this.name = name
   }

   @Override
   public boolean equals(Object obj) {
      Student s = (Student)obj
      return this.rollNo == s.rollNo && this.name.equalsIgnoreCase(s.name)
   }
   
   @Override
   public String toString() {
      return "[ " + this.rollNo + ", " + this.name + " ]"
   }
}

Output

When we run the above program, we will get the following result −

[1:[ 1, Julie ], ...]