Oct 11, 2016 · Is it really a good practice to avoid using NOT operator in IF conditions in order to make your code better readable? I heard the if (doSomething()) is better then if (!doSomething()). " if (...) is better than if (!...) " - Wait, wat? Question has been slightly extended to make it …

Jan 8, 2024 · The not operator is a logical operator, represented in Java by the ! symbol. It’s a unary operator that takes a boolean value as its operand. The not operator works by inverting (or negating) the value of its operand. 3.1. Applying the not Operator to a Boolean Value

Apr 16, 2025 · Java operators are special symbols that perform operations on variables or values. These operators are essential in programming as they allow you to manipulate data efficiently. They can be classified into different categories based on their functionality.

Feb 6, 2016 · BigDecimal aa = null; try { aa = new BigDecimal(input); } catch (NumberFormatException nfe) { //Not a numerical value, throw an error } if (aa.compareTo(BigDecimal.ZERO) <= 0) { //Value is negative }

3 days ago · I need to put a constraint for negative values on string variable. For Eg :-- string zeroval = "0.0000" String x = ""; if (x==null) || (x.equals(zeroval)) { // code which checks if string x has 0 or null value x = "--" // replace it by -- }

Aug 8, 2023 · In Java, logical operators include the conditional or, denoted as ||, as well as the conditional and - &&. Note: also in mathematical logic, the equivalence relation is considered, in other words, equality.

Nov 2, 2023 · Using the NOT operator (!) is a key skill for any Java developer. It allows you to elegantly express the opposite of a condition. By getting NOT right, you can write cleaner, tighter code and avoid tricky bugs. In this comprehensive guide, I‘ll take you through everything you need to know about using ! in if statement conditions.

Mar 26, 2016 · Negation is the act of setting a value to its negative version — the value of 2 becomes –2. Some math-related tasks require that you negate a value in order to use it. In some cases, people confuse negation with subtraction, but subtraction is a binary operation and negation is a unary operation.

Keep in mind that you must use " == ", not " = ", when testing if two primitive values are equal. The following program, ComparisonDemo, tests the comparison operators: public static void main(String[] args){ int value1 = 1; int value2 = 2; if(value1 == value2) System.out.println("value1 == value2"); if(value1 != value2)

Apr 14, 2025 · In this article, we will explore different types of operators in Java, including arithmetic, unary, relational, logical, and more, along with practical examples. Example: This example demonstrates the use of the + (addition) and – (subtraction) operators to perform arithmetic operations on two integer variables.