I'm using eclipse, so I have this argument on the run configuration:
hello HELLO hello
Apparently, it's on String[] args. Is there a method that can concatenate all the array values ALONG with the empty spaces between them?
I have tried splicing the arrays into a char arrays, used the toString method(garbage value for some reason), and even StringBuilder. But it always gives values but not the spaces itself. @@
You can use the String.join method:
String[] arr = {"hello", "HELLO", "hello"};
System.out.println(String.join(" ", arr));
String#join is available in Java 8.
Using StringBuilder:
StringBuilder sb = new StringBuilder();
String sep = "";
for (String str : arr) {
sb.append(sep);
sb.append(str);
sep = " ";
}
System.out.println(sb.toString());
try this
public static void main(String[] args)
{
String concated = "";
for(String arg:args){
concated+=arg+" ";
}
System.out.println(concated);
}
Well if I understood your question correctly, you have such array:
string[] str = new string[3] { "Hello", "HELLO", "hello"};
If you want them to have spaces between each words you can do something like
string output = "";
for(int i = 0; i< str.length; i++)
{
if(i + 1 != str.length)
{
output += str[i] + " ";
}
else
{
output += str[i];
}
}
str even though it is an array. So seems like you forgot the index values when using output += str [ i ] + " ";. Moreover, it is Java, hence, Length should be length, with small l not capital `L' :-). Though rest of the logic is corrent