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Java Java Basics Perfecting the Prototype String Equality

Posted by Pedram Namiranian
Pedram Namiranian
550 Points

Boonlean error

I was trying to create a program where if firstExample = secondExample the screen will say "first is equal to second". However when it comes to the code if (firstExample = secondExample) the preview points to the the equals sign in my code and says boonlean error.

Equality.java 
String firstExample = "hello";
String secondExample = "hello";
String thirdExample = "HELLO";
if (firstThing = secondThing) {
  console.printf("first is equal to second");
}

2 Answers

James Simshaw
James Simshaw
28,738 Points
James Simshaw
James Simshaw
28,738 Points

In a lot of programming languages(Java being one of them) = is for assignment, while == is for comparing if two things are equal.

Robert Richey
PLUS
Robert Richey
Courses Plus Student 16,352 Points
Robert Richey
Robert Richey
Courses Plus Student 16,352 Points

Hi Pedram,

When comparing the value of strings in Java, use .equals(). For example,

if (firstThing.equals(secondThing)) {
  console.printf("first is equal to second");
}

Using == in string comparisons will check if they are the same object, not if they contain the same value.