Java String equals() Method

Java String equals() Method

What is String?

In Java, an string class is a series of characters that are interpreted literally by a script. An object called a string represents a string of characters. Java.lang is used. A string object is made using the String class.

  • Numerous methods, including compare(), concat(), equals(), split(), length(), replace(), compareTo(), intern(), and substring(), are available in the Java String class.

To know more about String Class in java read the complete article.

String Equals() Method:

The Java String equals() method of the String class compares the contents of the two strings. It returns false if any character is not found to match. It returns true if all characters match.

This string is compared to the given object. The argument must not be null and must be a String object that represents the same set of characters as this object in order for the result to be true.

  • The java.lang.String class provides a lot of built-in methods that are used to manipulate string in Java.These methods help us to perform operations on String objects such as trimming, concatenating, converting, comparing, replacing strings etc.

Syntax:

public boolean equals(Object anObject)

Parameters:

anObject - The object to compare this String against

Let’s look at a string-related Java program where the Java String Equals() method is used to perform an operation on the given string.

Examples : Concatenating two given strings difference

Run
public class Main {
  public static void main(String[] args) {
    String myStr1 = "Hello";
    String myStr2 = "Hello";
    String myStr3 = "Hello PrepInsta";
    System.out.println(myStr1.equals(myStr2));
    System.out.println(myStr1.equals(myStr3));
  }
}

Output

true
false

Examples 2 : Java String Concat() Method

Run
public class Main {
  public static void main(String[] args) {
    String myStr1 = "PrepInsta";
    String myStr2 = "Prime";
    String myStr3 = "PrepInsta";
    System.out.println(myStr1.equals(myStr2));
    System.out.println(myStr1.equals(myStr3));
  }
}

Output

false
true

Examples 3: Concatenating two given strings ignoring lower and upper case.

Run
public class Main {
  public static void main(String[] args) {
    String myStr1 = "PrepInsta";
    String myStr2 = "Prime";
    String myStr3 = "Prep";
    System.out.println(myStr1.equals(myStr2));
    System.out.println(myStr1.equals(myStr3));
  }
}

Output

false
false

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