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Chapter 4d - String Comparison

using Equals() to compare Strings​

String  hello1 = "Hello";
String  hello2 = "Hello";
System.out.print(hello1.equals(hello2));
🧪 Try the code out~!
String  word1 = "test"
String  word2 = "Test"
System.out.print(word1.equals(word2)); 
System.out.println(word1.equalsIgnoreCase(word2));
🧪 Try the code out~!

Using compareTo() to compare Strings:​

String s1 = "hello";
String s2 = "hello";
String s3 = "apple";
String s4 = "nation";
System.out.println(s1.compareTo(s2)); //0 because both are equal 
System.out.println(s1.compareTo(s3)); //7 because "h" is 7 times greater than "a" 
System.out.println(s1.compareTo(s4)); //-6 because "h" is 6 times lower than "n"
🧪 Try the code out~!

👀 TODO: Trvia

Dictionary Exercise​

👀

Exercise
  • Modify this program so that it compares and orders two words lexicographically.
import java.util.Scanner;

class Main{
public static void main (String args[]){
   Scanner scan=new Scanner(System.in);
   System.out.print("\n Enter the first word : ");
   String word1=scan.nextLine();
   System.out.print("\n Enter the second word : ");
   String word2=scan.nextLine();
   
   if(true){
      System.out.println(word1 + " and " + word2 + " are lexicographically same");
   }else if(true){
      System.out.println(word1 + " ," + word2);
   }else{
      System.out.println(word2 + ", " + word1);
   }
 }
}

🙋‍♀️ Sample Program