Java Definition and Meaning Java is a multi-platform, object-oriented, and network-centric language. It is among the most used programming language. Java is also used as a computing platform. It is considered as one of the fast, secure, and reliable programming languages preferred by most organizations to build their projects.
Full Answer
What does Java stand for?
java Jachtvliegtuig Afdeeling (Dutch: Hunting Aircraft Division) [not an acronym] A general ...
What does \N and \t mean in Java with examples?
Both n and t are called escape sequences in java. What does n mean in Java? This means to insert a new line at this specific point in the text. In the below example, "n" is used inside the print statement, which indicates that the control is passed to the next line. As a result, the text following "n" will be printed on the next line.
What is the or symbol in Java?
The symbol table used for following purposes:
- It is used to store the name of all entities in a structured form at one place.
- It is used to verify if a variable has been declared.
- It is used to determine the scope of a name.
- It is used to implement type checking by verifying assignments and expressions in the source code are semantically correct.
What does the % do in Java?
What does Java do for my computer?Java was created by Sun Microsystems to run thousands of applications regardless of the operating system.It had to, because...
What does != Mean in Java?
Java != The != operator, also known as not equal to , is an equality operator and is used to check the equality of two operands. It returns a boolean value that is either true or false. If the two operands are equal, then it returns false, true otherwise.
What does %10 do in Java?
n%10 gives you the least significant digit of n by calculating the remainder of dividing the number by 10.
What does '?' Do in Java?
It is called conditional operator. This is how it works. if min is greater than or equal to 2 ,then first value after ? that is 2 here will be assign to corresponding variable ,otherwise second value that is 1 here will be assign.
What does i == 0 mean in Java?
i %2 == 0 is what is generally used to determine if an index is an even index. In your example this means that the even indexes for row 0 will be set to black. The other rows not equal to zero will also have every other spot being black or white.
What is @override in Java?
The @Override annotation indicates that the child class method is over-writing its base class method. The @Override annotation can be useful for two reasons. It extracts a warning from the compiler if the annotated method doesn't actually override anything. It can improve the readability of the source code.
What type of operator is used in Java?
Java defines several bitwise operators, which can be applied to the integer types, long, int, short, char, and byte.
What is bitwise operator in Java?
The Bitwise Operators. Java defines several bitwise operators, which can be applied to the integer types, long, int, short, char, and byte. Bitwise operator works on bits and performs bit-by-bit operation. Assume if a = 60 and b = 13; now in binary format they will be as follows −. a = 0011 1100.
What is instanceof operator?
The operator checks whether the object is of a particular type (class type or interface type). instanceof operator is written as −
What happens if the object referred by the variable on the left side of the operator passes the IS-A check?
If the object referred by the variable on the left side of the operator passes the IS-A check for the class/interface type on the right side, then the result will be true. Following is an example −
What is the function of the not operator?
Called Logical NOT Operator. Use to reverses the logical state of its operand. If a condition is true then Logical NOT operator will make false.
What is $ in Java?
First, in Java ‘$’ is a valid symbol for variable names and you can just use it for whatever you like: making your code cla$$ier, denoting that variables are private under a code convention, etc. Second, ‘$’ is used as a separator character for the Java compiler to specify when a class is declared under another class.
What is the percentage sign in Java?
In general, Percent sign (%) acts as a modulus operator in java programming language.
What is a boolean operator?
It is an operator which is found in expressions; it operates on expressions which produce a boolean result, and negates that result. So for example in the statement
What does the boolean operator mean in Java?
This information can be found on Oracle's Java website or even wikipedia on a page describing Java operators. The ! operator means "not" in a boolean operation. For example, if you have a boolean variable "visible" - boolean means that it can only equal true or false by the way.
What does the== operator do?
Are you confused? Well, let us explain further: as we mentioned earlier, the “==” operator is actually checking to see if the string objects (obj1 and obj2) refer to the exact same memory location. In other words, if both obj1 and obj2 are just different names for the same object then the “==” operator will return true when comparing the 2 objects. Another example will help clarify this:
What is the operator of negation in Java?
The ! operator in java is the negation operator. This operator may for example be used as,
What does it mean when the expression to the right of the boolean doesn't evaluate to a?
If the part of the expression to the right of the ! doesn't evaluate to a boolean, it's a compiler error. So in my example above, if formIsComplete was an integer variable, that expression wouldn't compile.
Left Shift
The left shift means that shift each of the bits in binary representation toward the left. For example, when we say left shift 5 or 101 by one position. We will shift each of the bits by one position towards the left. So after shifting the number 5 towards left by one position, the number obtained is 10 or 1010.
Left Shift Operator in Java
Most of the languages provide left shift operator using which we can left shift a number by certain positions and Java is one of them. The syntax of the left-shift operator in Java is given below,
The Arithmetic Operators
The Relational Operators
The Bitwise Operators
- Java defines several bitwise operators, which can be applied to the integer types, long, int, short, char, and byte. Bitwise operator works on bits and performs bit-by-bit operation. Assume if a = 60 and b = 13; now in binary format they will be as follows − a = 0011 1100 b = 0000 1101 ----------------- a&b = 0000 1100 a|b = 0011 1101 a^b = 0011 0001 ~a = 1100 0011 The following table lists the …
The Logical Operators
- The following table lists the logical operators − Assume Boolean variables A holds true and variable B holds false, then − Show Examples
Precedence of Java Operators
- Operator precedence determines the grouping of terms in an expression. This affects how an expression is evaluated. Certain operators have higher precedence than others; for example, the multiplication operator has higher precedence than the addition operator − For example, x = 7 + 3 * 2; here x is assigned 13, not 20 because operator * has higher ...
What Is Next?
- The next chapter will explain about loop control in Java programming. The chapter will describe various types of loops and how these loops can be used in Java program development and for what purposes they are being used.