CODEWITHSUNDEEP
javaarraysconcatenation
Goldengirl
Goldengirl

Reputation: 967

How to concatenate the arrays at the end of the loop

I have created two class in Java. The main class 'Main' is used to pass array values into the second class 'Plan'. My code looks something like this:

import java.util.ArrayList;
import java.utils.Arras;

public class Main {

    public enum State {
        A,
        D,
        H
    };

    Plan[] plan= new Plan[] {
             new Plan(new State[]{State.A, State.A, State.A}),
             new Plan(new State[]{State.A, State.D, State.H})};
}

My other class 'Plan' looks like this:

import java.utils.Arrays;

public class Plan {

    public static Main.State[] input;
    public static Main.State[] output;
    public static Main.State[] input_new = new Main.State[4];

    this.input = input;
    this.output = output;
    this.input_new = input_new;

    for(int i = 0; i < input.length; i++) {
        input_new[i] = input[i];
    }
}

Now at the end of the loop I want to append the arrays so that it prints a single array which is

A A A A D H.

I tried using [this]/How can I concatenate two arrays in Java?) method, but it gives me an eeror saying 'ArrayUtils' cannot be resolved. Can somebody kindly point out my mistake here?

Thank you in advance.

Upvotes: 0

Views: 116

Answers (5)

user2526920
user2526920

Reputation:

Like the answer you are relating to states, ArrayUtils is a class of the Apache Commons library. You can either add the dependency to your project, or use one of the manual approaches which are also posted in the same thread than the answer that you used.

Upvotes: 1

Estimate
Estimate

Reputation: 1461

Use apache.commons API for ArraysUtils

Upvotes: 1

Sharon Ben Asher
Sharon Ben Asher

Reputation: 14383

The class ArrayUtils belongs to Apache Commons Lang library. Follow the link to get the jar and include in your classpath.

Upvotes: 1

Tobias Kremer
Tobias Kremer

Reputation: 1641

Add the Apache Commons Dependency? ArrayUtils is not part of the JDK.

How you do this depends on your build tooling. Please Google how you add JAR dependencies to the tooling you are using.

Upvotes: 1

Bohemian
Bohemian

Reputation: 425358

Try this:

Stream.concat(Arrays.stream(arr1), Arrays.stream(arr2)).toArray();

Upvotes: 1

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