Question

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Use a variable within a variable? Java

Hi this is a general programming related question more so than a java question. If i have a program like this :

public class tester {

    public static void main(String[] args) {
        int i = 2;
        String text = "Hello";
        String text2  = "world";

        System.out.println(text);
        System.out.println(text + i);
    }    
}

I want to print “hello”, then “world” but instead i print “hello” and then “hello2”. is there anyway i can access the variable text2 by appending the counter i to the variable test? I need a solution for this for a much more complicated program i am working on

Thanks,
Matt

Answer 1

You can do this using an array:

String[] text = new String[2];
text[0] = "Hello";
text[1] = "world";

System.out.println(text[0]);
System.out.println(text[1]);

You can also index the array using a variable:

int i = 1;
System.out.println(text[i]);

Java does not generally support constructing (local) variable names at runtime. This is true of most (but not all) programming languages.