Does equalsIgnoreCase check null?
equalsIgnoreCase(null); will definitely result in a NullPointerException. So equals methods are not designed to test whether an object is null, just because you can’t invoke them on null .
Why am I getting null in Java?
In Java, a special null value can be assigned to an object reference. NullPointerException is thrown when an application attempts to use an object reference that has the null value. These include: Calling an instance method on the object referred by a null reference.
What does equalsIgnoreCase mean in Java?
The equalsIgnoreCase() method of the String class compares two strings irrespective of the case (lower or upper) of the string. This method returns a boolean value, true if the argument is not null and represents an equivalent String ignoring case, else false.
How do you use not equalsIgnoreCase in Java?
Java String equalsIgnoreCase() Method This method returns true if the strings are equal, and false if not. Tip: Use the compareToIgnoreCase() method to compare two strings lexicographically, ignoring case differences.
What is difference between equals and equalsIgnoreCase in Java?
The only difference between them is that the equals() methods considers the case while equalsIgnoreCase() methods ignores the case during comparison. For e.g. The equals() method would return false if we compare the strings “TEXT” and “text” however equalsIgnoreCase() would return true.
How do I overcome Java Lang NullPointerException?
In Java, the java. lang. NullPointerException is thrown when a reference variable is accessed (or de-referenced) and is not pointing to any object. This error can be resolved by using a try-catch block or an if-else condition to check if a reference variable is null before dereferencing it.
Which is faster equals or equalsIgnoreCase?
equalsIgnoreCase() is 20–50% faster than the equals(param.
What is the difference between equals and equalsIgnoreCase in Java?
What is the opposite of equalsIgnoreCase?
The verdict is, use && instead.