Groovy - List remove(int index) method

---

---

Description

Groovy List remove(int index) method removes the element at the specified position in this List.

Syntax

Object remove(int index)

Parameters

Index − Index at which the value needs to be removed.

Return Value

The removed value.

Example - Removing value from a List of Integers

Following is an example of the usage of this method −

main.groovy

def lst = [11, 12, 13, 14]; 

println(lst.remove(2)); 
println(lst);  

Output

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

13 
[11, 12, 14]

Example - Removing value from a List of Strings

Following is an example of the usage of this method −

main.groovy

def lst = ["Apple", "Peach", "Orange", "Mango"]; 

println(lst.remove(2));
println(lst);   

Output

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

Mango
[Apple, Peach, Orange]

Example - Removing value from a List of Objects

Following is an example of the usage of this method −

main.groovy

def lst = [new Student(1, "Julie"),new Student(2, "Robert"),new Student(3, "Adam")];

println(lst.remove(2));
println(lst);   

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 −

[ 3, Adam ]
[[ 1, Julie ], [ 2, Robert ]]