I would like to have an array that contains strings with variable, so the user will be able choose which sentence he wants and what will be the value of the variable.
For example, the array will contain:
arr[0] = "Hi " + name + ", Welcome"
arr[1] = "Happy Birthday " + name;
arr[2] = "You are " + name;
I want to get an array like this from a function, and then to print it with some name. For example:
String s = (a[0], "Joe")
So that s will be:
Hi Joe, Welcome
Is it possible?
You could do:
String[] arr = new String[3];
arr[0] = "Hi %s, Welcome"
arr[1] = "Happy Birthday %s";
arr[2] = "You are %s";
Then
for (String s : arr) {
System.out.printf(s + "%n", "Joe");
}
Which outputs:
Hi Joe, Welcome
Happy Birthday Joe
You are Joe
The printf uses the java.util.Formatter to allow insertion of variables into a String. The %n creates a new line within the Formatter
For more on this, please check out this relevant tutorial: Formatting Numeric Print Output
%s phrases must be part of the string.
you can define an interface to Cheer and implement each behavior like this
interface Cheer {
String cheerTo(String name);
}
class Welcome implements Cheer {
@Override
public String cheerTo(String name) {
return "Hi " + name + ", Welcome";
}
}
class Birthday implements Cheer {
@Override
public String cheerTo(String name) {
return "Happy Birthday " + name;
}
}
class Whoim implements Cheer {
@Override
public String cheerTo(String name) {
return "You are " + name;
}
}
then you can use it like this
Cheer[] array = new Cheer[3];
array[0] = new Welcome();
array[1] = new Birthday();
array[2] = new Whoim();
String s = array[0].cheerTo("Joe");
String b = array[1].cheerTo("Sam");
System.out.println(s); // prints: Hi Joe, Welcome
System.out.println(b); // prints: Happy Birthday Sam
Cheerthat print something depending on the input