What does equalsignorecase mean in java

The equalsIgnoreCase() method in Java is used to compare two strings, ignoring case. The usage is as follows: accepts a string parameter. Returns true if the two strings are equal (ignoring case); otherwise returns false. Case comparison uses the rules of the current locale. Throws an exception if any parameter is null.

equalsIgnoreCase in Java

In Java, the equalsIgnoreCase() method is used to compare two strings, Case is ignored.

Usage

This method accepts a string parameter and returns a Boolean value:

• If the two strings are equal (ignored uppercase and lowercase), returns true.
• If the two strings are not equal, return false.

Grammar

public boolean equalsIgnoreCase(String str)

Description

• Case comparison is performed using the rules of the current locale of.
• If any parameter is null, a NullPointerException is thrown.
• This method is similar to the equals() method, except that it ignores case.

Example

String str1 = "Hello";
String str2 = "hello";

// 忽略大小写比较
boolean result = str1.equalsIgnoreCase(str2);

// 打印结果
System.out.println(result); // 输出 true

Applicable scenarios

equalsIgnoreCase() method is usually used in the following scenarios:

• Compare case-insensitive strings such as usernames or passwords.
• Find words or phrases that are not case sensitive.
• Handle input from different sources, which may use different casing conventions.

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