Short form for Java if statement

Question

I know there is a way for writing a Java if statement in short form.

if (city.getName() != null) {
    name = city.getName();
} else {
    name=         


        

Answer 1

You can use ternary operator in java.

Syntax:

Condition ? Block 1 : Block 2

So in your code you can do like this,

name = ((city.getName() == null) ? "N/A" : city.getName());

For more info you can refer this resource.

Answer 2

name = (city.getName() != null) ? city.getName() : "N/A";

Answer 3

Use org.apache.commons.lang3.StringUtils:

name = StringUtils.defaultString(city.getName(), "N/A");

Answer 4

The ? : operator in Java

In Java you might write:

if (a > b) {
  max = a;
}
else {
  max = b;
}

Setting a single variable to one of two states based on a single condition is such a common use of if-else that a shortcut has been devised for it, the conditional operator, ?:. Using the conditional operator you can rewrite the above example in a single line like this:

max = (a > b) ? a : b;

(a > b) ? a : b; is an expression which returns one of two values, a or b. The condition, (a > b), is tested. If it is true the first value, a, is returned. If it is false, the second value, b, is returned. Whichever value is returned is dependent on the conditional test, a > b. The condition can be any expression which returns a boolean value.

Answer 5

name = city.getName()!=null?city.getName():"N/A"

Answer 6

To avoid calling .getName() twice I would use

name = city.getName();
if (name == null) name = "N/A";