Conditional operator

This is the "Conditional Operator ".The conditional operator ? : uses the boolean value of one expression to decide which of two other expressions should be evaluated.If the boolean value of the condition is true, the left side of colon ":" is executed. If it's false, the right side is executed.

public class QuestionTest { public static void main(String[] args) { String test; int num1 = 0; int num2 = 0; int num3 = 0; int num4 = 0; num1 = 5; test = num1 > 0 ? "Positive" : "Negative"; System.out.println(test); num2 = 6; test = num2 > 0 ? "Positive" : "Negative"; System.out.println(test); num3 = -3; test = num3 > 0 ? "Positive" : "Negative"; System.out.println(test); num4 = 78; test = num4 > 0 ? "Positive" : "Negative"; System.out.println(test); test = num1 > 0
? num2 > 0
? num3 > 0
? num4 > 0
? "All numbers are positive"
: "Num4 isn't positive"
: "Num3 isn't positive"
: "Num2 isn't positive"
: "Num1 isn't positive";
System.out.println(test+"\n"); //Only num3 is negative. num1 = 5; test = num1 > 0 ? "Positive" : "Negative"; System.out.println(test); num2 = 6; test = num2 > 0 ? "Positive" : "Negative"; System.out.println(test); num3 = 3; test = num3 > 0 ? "Positive" : "Negative"; System.out.println(test); num4 = 78; test = num4 > 0 ? "Positive" : "Negative"; System.out.println(test); test = num1 > 0 ? num2 > 0 ? num3 > 0 ? num4 > 0 ? "All numbers are positive" : "Num4 isn't positive" : "Num3 isn't positive" : "Num2 isn't positive" : "Num1 isn't positive"; System.out.println(test); //All numbers are positive. } }