Java – String equals(Object anObject) method

July 19, 2016 SJ String Handling 0

In this article, we will discuss string comparison using String’s equals() method

1. String’s equals(Object anObject) method:

  • This String method is used to perform string comparison
  • Note: This String comparison is case-sensitive, there is one more variation to this equals() method i.e.; equalsIgnoreCase(), which is case-insensitive

1.1 Method Signature:

public boolean equals(Object anObject);

1.2 Returns:

  • Returns a boolean value either true or false
    • True –> if both string contents are equal, considering CASE differences
    • False –> if both string contents are NOT equal, considering CASE differences

2. Examples on equals() method:

  • String comparison program using equals() method

StringEqualsMethod.java

package in.bench.resources.string.methods;

public class StringEqualsMethod {

	public static void main(String[] args) {

		// string literal and objects
		String str1 = "bench";
		String str2 = new String("bench");
		String str3 = new String("BENCH");

		// comparing string literal and string object
		boolean bool1 = str1.equals(str2);

		// printing to the console
		System.out.println("str1 and str2 are equal ? : " + bool1);

		// comparing string literal and string object
		boolean bool2 = str1.equals(str3);

		// printing to the console
		System.out.println("str2 and str3 are equal ? : " + bool2);

		// in-line equality check
		System.out.println("str1 and oracle are equal ? : "
				+ str1.equals("oracle"));
	}
}

Output:

str1 and str2 are equal ? : true
str2 and str3 are equal ? : false
str1 and oracle are equal ? : false

Related Articles:

References:

Happy Coding !!
Happy Learning !!

Java - String equalsIgnoreCase(Object anObject) method
Java - String endsWith(String suffix) method

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