Java concat with integer and string

Question

I want to write a program that would pass an integer and a string to a value-returning method. I know how to do this part, however I need to concatenate the int (which is 2) and the string (which says "bye"), and have it print the string the number of the int. (Example: Bye Bye).

I will respond clarifying the issue as soon as possible.

Answer 1

You can concatenate String with int in Java like this:

String result = "some " + 2;

The string should go first in this "+" operator.

Answer 2

try this out

private String repeateAndConcateString (int prm_Repeat, String prm_wordToRepeat){
            if(prm_Repeat <=0 || prm_wordToRepeat == null){
                      return "";
             }
            String temp = "";
            for(int i= 1 ; i<=prm_Repeat ; i++){  // loop through the number of times to concatinate. 
                  temp += prm_wordToRepeat; //Concate the String Repeatly 1 to prm_Repeat 
             }
           return temp;   // this will return Concatinate String.
}

Answer 3

For string repeat, Apache StringUtils have method repeat .

Or an implementation without externals:

public static String repeat(int n, String s){
    StringBuilder sb = new StringBuilder(n * s.length());
    while(n--)
        sb.append(s);
    return sb.toString();
}

Integers can be converted to a string by both references: String.valueOf and Integer.toString . String concatenation works like math addition ( + ).

Answer 4

Try this.

static String repeat(int times, String s) {
    return IntStream.range(0, times)
        .mapToObj(x -> s)
        .collect(Collectors.joining(" "));
}

and

System.out.println(repeat(2, "bye"));
// -> bye bye

Answer 5

public String repeatString(String str, int n)
{
    if(n<1 || str==null)
        return str;
    StringBuilder sb = new StringBuilder();
    for(int i=0; i<n; i++)
    {
        sb.append(str);
        if(i!=(n-1))        // If not the last word then add space
            sb.append(" ");
    }
    return sb.toString();
}