- What does int  mean?
- What does || mean in Java?
- Why is used in Java?
- What is print () in Java?
- What is super () in Java?
- What is B in Java?
- What are the 3 principles of object oriented programming?
- What does != Mean in code?
- What does Colon do in Java?
- What does double semicolon mean in Java?
- What does != Mean in Java?
- Can you use += in Java?
- What does * mean in Java?
- What is <> used for in Java?
What does int  mean?
An int variable contains only whole numbers Int, short for “integer,” is a fundamental variable type built into the compiler and used to define numeric variables holding whole numbers.
Other data types include float and double.
C, C++, C# and many other programming languages recognize int as a data type..
What does || mean in Java?
|| operator in Java || is a type of Logical Operator and is read as “OR OR” or “Logical OR“. This operator is used to perform “logical OR” operation, i.e. the function similar to OR gate in digital electronics.
Why is used in Java?
Here is given the 6 usage of java this keyword. this can be used to refer current class instance variable. … this can be passed as argument in the constructor call. this can be used to return the current class instance from the method.
What is print () in Java?
print(): print() method in Java is used to display a text on the console. This text is passed as the parameter to this method in the form of String. This method prints the text on the console and the cursor remains at the end of the text at the console. The next printing takes place from just here.
What is super () in Java?
The super keyword refers to superclass (parent) objects. It is used to call superclass methods, and to access the superclass constructor.
What is B in Java?
However, the Java compiler treats the “\b” literal as a Java escape sequence, and the string WORDS silently compiles to a regular expression that checks for a single backspace character.
What are the 3 principles of object oriented programming?
Encapsulation, inheritance, and polymorphism are usually given as the three fundamental principles of object-oriented languages (OOLs) and object-oriented methodology.
What does != Mean in code?
The not-equal-to operator ( != ) returns true if the operands don’t have the same value; otherwise, it returns false .
What does Colon do in Java?
The colon is a shortcut for iterating over a collection. The variable on the left of the colon is a temporary variable containing a single element from the collection on the right. With each iteration through the loop, Java pulls the next element from the collection and assigns it to the temp variable.
What does double semicolon mean in Java?
According to the Java language standard, the second semicolon is an empty statement. An empty statement does nothing. EmptyStatement: ; Execution of an empty statement always completes normally.
What does != Mean in Java?
Not Equal (!=) The != operator is a comparison operator, also used in conditional expressions. It reads, “not equal”. If the compared values are not equal to each other than the expression returns true.
Can you use += in Java?
As long as x and y are of the same type (for example, both are int s), you may consider the two statements equivalent. However, in Java, x += y is not identical to x = x + y in general. += performs an implicit cast, whereas for + you need to explicitly cast the second operand, otherwise you’d get a compiler error.
What does * mean in Java?
import java.util.* here means import all the stuff in that package. int a = 2 * 3; obviously this is the multiply operation. in regular expression * means subexpression before it appears several times. other means a symbol in a string.
What is <> used for in Java?
1. <> is used for a cool feature called generics. Java 5 solved this with generics, so now you can say ArrayList