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 .
Read moreDoes equals null safe Java?
The equals() method of StringUtils class is a null-safe version of the equals() method of String class , which also handles null values.
Read moreCan you do object equals null?
It’s entirely possible for two distinct object instances to be “equal” according to their contract. And then there’s the minor detail that since equals is a method, if you try to invoke it on a null reference, you’ll get a NullPointerException .
Read moreCan you use != With string?
The product uses the wrong operator when comparing a string, such as using “==” when the . equals() method should be used instead. In Java, using == or != to compare two strings for equality actually compares two objects for equality rather than their string values for equality .
Read moreHow do you write not equal to in Java?
The symbols used for Not Equal operator is != . Not Equal operator takes two operands: left operand and right operand as shown in the following. The operator returns a boolean value of true if x is not equal to y , or false if not.
Read moreDoes not equal in if statement Java?
The != operator does the exact opposite of the == operator. If the two variables are not equal, the expression is evaluated to true . If the two variables are equal, the expression is evaluated to false .
Read moreCan you use != For strings in Java?
Note: When comparing two strings in java, we should not use the == or != operators . These operators actually test references, and since multiple String objects can represent the same String, this is liable to give the wrong answer.
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