Groovy: Map: findAll: Find all the elements that matches to given criteria

public Collection findAll(Closure closure)

Find all the elements that matches to given criteria.

Example

Below statement gets all the female employee details.

result = employees.findAll {it.value.gender == 'F'}

Below statement gets all the male employee details.

result = employees.findAll {it.value.gender == 'M'}

HelloWorld.groovy

class Employee{
 String name
 int age
 int id
 char gender
 
 public Employee(int id, int age, String name, char gender){
  this.id = id
  this.age = age
  this.name = name
  this.gender = gender
 }
 
 String toString(){
  return "<id : ${this.id}, age : ${this.age}, name : ${this.name}, gender : ${this.gender}>"
 }
}

Employee emp1 = new Employee(1, 32, 'Susmitha', 'F' as char)
Employee emp2 = new Employee(2, 29, 'Krishna', 'M' as char)
Employee emp3 = new Employee(3, 41, 'Gopika', 'F' as char)
Employee emp4 = new Employee(4, 35, 'krishna', 'M' as char)

employees = [
 1 : emp1,
 2 : emp2,
 3 : emp3,
 4 : emp4
]

println "Get all the female employees"
def result = employees.findAll {it.value.gender == 'F'}
println "${result}"

println "\nGet all the male employees"
result = employees.findAll {it.value.gender == 'M'}
println "${result}"

Output

Get all the female employees

[1:<id : 1, age : 32, name : Susmitha, gender : F>, 3:<id : 3, age : 41, name : Gopika, gender : F>]

Get all the male employees

[2:<id : 2, age : 29, name : Krishna, gender : M>, 4:<id : 4, age : 35, name : krishna, gender : M>]

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