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Answers for "list add java"

Java
1

java api add

boolean add(E e)

Appends the specified element to the end of this list (optional operation).

Lists that support this operation may place limitations on what elements may be added to this list. In particular, some lists will refuse to add null elements, and others will impose restrictions on the type of elements that may be added. List classes should clearly specify in their documentation any restrictions on what elements may be added.

Specified by:
    add in interface Collection<E>
Parameters:
    e - element to be appended to this list
Returns:
    true (as specified by Collection.add(E))
Throws:
    UnsupportedOperationException - if the add operation is not supported by this list
    ClassCastException - if the class of the specified element prevents it from being added to this list
    NullPointerException - if the specified element is null and this list does not permit null elements
    IllegalArgumentException - if some property of this element prevents it from being added to this list
Posted by: Guest on January-07-2021
4

java append to list

package com.journaldev.examples;

import java.util.ArrayList;
import java.util.List;

public class ListAddExamples {

	public static void main(String[] args) {

		List<String> vowels = new ArrayList<>();

		vowels.add("A"); // [A]
		vowels.add("E"); // [A, E]
		vowels.add("U"); // [A, E, U]

		System.out.println(vowels); // [A, E, U]

		vowels.add(2, "I"); // [A, E, I, U]
		vowels.add(3, "O"); // [A, E, I, O, U]

		System.out.println(vowels); // [A, E, I, O, U]
	}
}
Posted by: Guest on October-29-2020
2

how to add a list in a list java

List<SomePojo> list = new ArrayList<SomePojo>();

List<SomePojo> anotherList = new ArrayList<SomePojo>();
anotherList.add(list);
Posted by: Guest on February-15-2020
2

java add a list to a list

List mylist.addAll(secondList);
Posted by: Guest on June-09-2020
-2

how to add all list elements at once in java

import java.util.*;
List<Integer> l = new ArrayList<Integer>();
l.addAll(new ArrayList<Integer>(Arrays.asList(5,6,8,11)));
Posted by: Guest on May-04-2020

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