Say, for example, I have a double variable in Java:
double alpha = 3;
However, I wanted to create a String variable, including that Double Variable:
String beta = "Alpha has a value of " + alpha;
So that the output would be
//Output
Alpha has the value of 3
However, it will not let me do so, as it says the double value cannot be included in the string value.
As I am doing this for around 150 variables, I want to know how to do it the simplest and shortest way.
Thanks
I am doing this for around 150 variables
A common way of simplifying a repeated task is defining a helper method for it:
String description(String name, Object obj) {
return name + " has a value of " + obj;
}
Now you can use it like this:
String beta = description("Alpha", alpha);
Doing this for 150 variables sounds suspicious - chances are, you have an opportunity to make an array. You can define an array of names, then pair them up with values, like this:
String[] names = new String[] {
"Alpha", "Beta", "Gamma", ...
}
double[] values = new double[] {
1.2, 3.4, 5.6, ...
}
for (int i = 0 ; i != names.length() ; i++) {
System.out.println(description(names[i], values[i]));
}
You can use Double.toString(double).
String beta = "Alpha has a value of " + Double.toString(alpha);
When you need to convert a double to a string, use
Double.toString(double);
Where double is the name of the variable.
