How do I loop through an array list and display the elements stored without a system.out.println statement?

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This question already has answers here:

You would have to introduce an instance variable in order to cache the result of your method (your local variable doesn't live past the current execution of the method).

And you'd also need to change the logic of that method, to append all the elements into a single String.

I also suggest adding some separator between the elements.

private String cachedProperties = null;
public String displayProperties() {
    if (cachedProperties == null) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < properties.size(); i++) {
            if (i > 0) {
                sb.append(',');
            }
            sb.append(properties.get(i));
        }
        cachedProperties = sb.toString();
    }   
    return cachedProperties;
}

Note that if the properties List may change, you have to reset your cache instance variable each time that happens.

How to loop ArrayList in Java, In this post we are sharing how to iterate (loop) ArrayList in Java. arrlist.add(39 ); arrlist.add(40); /* For Loop for iterating ArrayList */ System.out.println("For Loop" ); for (int counter = 0; How to iterate arraylist elements using Enumeration interface Is it possible to loop to arrayLists and display them at the same time? or remove each element Be careful, removing elements from an ArrayList list is a big NO-NO, as your "loop" will take quadratic time due to shifting elements (provided that you loop from first to last element). – Dimitry K Feb 3 '14 at 11:19

May be modify the code to get the final string as below

property += properties.get(i);
property += " "

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As said in previous answers you already have your ArrayList and it holds your properties. Holding a variable of what's in your list is not advisable since your list may change and the field would not reflect. What you could do, if this is something you must do, is create a class that behaves like you want that has an ArrayList where you write custom add / remove methods that provide the functionality you require.

public class Example<E> {
    private List<E> properties;
    private String values;
    private String separator;

    public Example(){
        this(", ");
    }

    public Example(String separator){
        this.properties = new ArrayList<>();
        this.separator = separator;
    }

    public void add(E value){
        properties.add(value);
        updateValues();
    }

    private void updateValues(){
        StringJoiner sj = new StringJoiner(separator);
        properties.forEach(p -> sj.add(p.toString()));
        values = sj.toString();
    }

    public String getValues() {
        return values;
    }
}

Usage would be as follows

Example<String> example = new Example<>();
example.add("hello");
example.add("world");
System.out.println(example.getValues());

Which would result in

hello, world

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6.3. Enhanced For-Loop (For-Each) for Arrays — AP CS Awesome, This loop is much easier to write because it does not involve an index You may have used a similar loop in AP CSP Pseudocode or App Inventor with lists like below. System.out.println( value ); } // for each loop with a String array to print each You can use it whenever you need to loop through all the elements of an � C Program to Print Elements in an Array. This program to print an array in c allows the user to enter the Size and the row elements of One Dimensional Array. Next, we are using For Loop to iterate the array values and print all the elements in this array

Java Loop Through List, There are primarily 5 different ways to loop over an ArrayList. Classic For Loop For Loop. for (int i=0; i<fruitBasket.size(); i++) { System.out.println(fruitBasket.get(i )); } Java Control Flow Statements: ifelse and switch. Loop method: The first thing that comes to mind is to write a for loop from i = 0 to n, and print each element by arr[i]. for(int i = 0; i . Array.length; i++) System.out.println(Array[i]); This article tells how to print this array in Java without the use of any loop.

The example also shows various ways to print the ArrayList using a loop, Arrays class, and Java 8 Stream. How to print ArrayList in Java? There are several ways using which you can print ArrayList in Java as given below. 1) Using for loop. You can print ArrayList using for loop in Java just like an array.

Comments

no. you already have such a property, it's your list. In your current approach, you'll just return the last element, since you overwrite the value each iteration
@Stultuske, java.util.Properties extends java.util.Hashtable and hence has no predictable order for keys. So there is no such thing a "last element".
@Bobfflander, welcome. Could you clarify what you are trying to achieve.
What are you trying to accomplish? Your list properties already contains those elements and you can already get a certain property with your properties.get(i). What purpose do you had in mind wanting to store all values in properties in a separated local variable? Some additional questions: where are they coming from (if they come from a .properties files there are loads of libraries to directly insert each property in a separated variable through annotations); what do you want to use them for; etc.
So what I'm trying to do is in another part of my code, I want to call the method displayProperties() which prints out all the elements stored in the array list, however I do not want to use a print statement to display the array list.
Thank you this method worked! much appreciated.