Java strings compare Equals () and equalsignorecase () differences

1 , use the Equals () method to compare two strings for equality. It has a general form such as the following:

Boolean equals (Object str)

Here str is a string object that is used to make a comparison with the invocation string (String) object. Assuming that two strings have the same character and length, it returns true. Otherwise, false is returned. Such a comparison is a distinction between uppercase and lowercase.

2, in order to run the comparison of ignoring uppercase and lowercase, can call the Equalsignorecase () method. When compared to two strings, it will feel the same as a-Z and a-Z. Its general form is as follows:

Boolean equalsignorecase (String str)

Here, str is a string object that is used to make a comparison with the invocation string (String) object. Assume that two strings have the same character and length. It also returns true, otherwise it returns false. The following examples illustrate the Equals () and Equalsignorecase () methods:

Demonstrate Equals () and Equalsignorecase ().

Class Equalsdemo {

public static void Main (String args[]) {

String S1 = "Hello";

String s2 = "Hello";

String s3 = "Good-bye";

String S4 = "HELLO";

SYSTEM.OUT.PRINTLN (S1 + "equals" + s2 + "+" +

S1.equals (S2));

SYSTEM.OUT.PRINTLN (S1 + "equals" + s3 + "+" +

S1.equals (S3));

SYSTEM.OUT.PRINTLN (S1 + "equals" + S4 + "+" +

S1.equals (S4));

SYSTEM.OUT.PRINTLN (S1 + "Equalsignorecase" + S4 + "+" +

S1.equalsignorecase (S4));

}

}

The output of the program can be seen in the following example:

Hello equals Hello--True

Hello equals Good-bye-False

Hello equals Hello--false

Hello equalsignorecase Hello--True

Java strings compare Equals () and equalsignorecase () differences