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Java Java Basics Perfecting the Prototype String Equality

Add another if statement that checks if the firstExample is equal ignoring case to thirdExample.

Add another if statement that checks if the firstExample is equal ignoring case to thirdExample. If it, is print out "first and third are the same ignoring case".

Equality.java
// I have imported a java.io.Console for you, it is named console. 
String firstExample = "hello";
String secondExample = "hello";
String thirdExample = "HELLO";
{if(firstExample.equals("hello")==
   secondExample.equals("hello"))
  console.printf("first is equal to second");}
{if(firstExample==
   thirdExample.equalsIgnoringCase("hello"))
  console.printf("first and third are the same ignoring case");}

2 Answers

Hi there,

The equals method works for all strings. It takes one parameter; another string (or variable containing one). The method compares the string the method is applied to with the parameter passed. In our example, we're comparing firstExample with secondExample. That look like:

firstExample.equals(secondExample)

That code will evaluate to a true or false and so is perfect to be used with an if conditional test:

if(firstExample.equals(secondExample)){
  // this hapens if the result is true
  console.printf("first is equal to second");
}

The next test is slightly different as it ignores the case of both strings. In the code you've written in your question and in the answer by Cody, the method has been named wrongly. It is equalsIgnoreCase(). You use it in exactly the same way as equals(). The finished challenge looks like:

String firstExample = "hello";
String secondExample = "hello";
String thirdExample = "HELLO";

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

if(firstExample.equalsIgnoreCase(thirdExample)){
 console.printf("first and third are the same ignoring case");
}

I hope that helps.

Steve.

Cody Te Awa
Cody Te Awa
8,820 Points
if (firstExample.equals(secondExample)) {
  console.printf("first is equal to second");
}

if (firstExample.equalsIgnoringCase(thirdExample)) {
  console.printf("first and third are the same ignoring case");}