Answer: In java the symbol "+" operator is used to perform string concatenation.
Explanation:
String concatenation refers to joining of two strings. So in java + is used to join strings which works provided one of the operands must be a String variable. Then it works by converting the other variable to String variable and joins the second operand to the end of the first operand.
An example of String concatenation is as follows:
int age = 10;
System.out.println("The boys age is " + age);
Output:
The boys age is 10.
here, the age is integer variable but as the phrase "The boys age is" is a String variable so it converts the age to String variable and joins both the Strings.
Black is the darkest color, the result of the absence or complete absorption of visible light. It is an achromatic color, literally a color without hue, like white and gray. It is often used symbolically or figuratively to represent darkness, while white represents light. This should help. If wrong, I am sorry.
Answer:
1. Insufficient storage space
2. Blue screen of death
3. Virus intrusion
4. Overheating
5. Stiff keyboard keys
Explanation:
When using a computer system there are certain issues that users would most likely encounter. Some of them include;
1. Insufficient storage space. This could arise because of insufficient storage in the hard drive or because the computer has limited memory space. Users might be unable to download apps because there is no space for them.
2. Blue screen of death. This occurs when the computer suddenly displays a blue screen with some information on the likely reason for the malfunction. A common cause of it is the use of corrupt devices.
3. Virus intrusion. This occurs for several reasons. It could be the result of a corrupt device, document, or application that was introduced to the computer. This could make the device to work at a slower rate.
4. Overheating. This usually occurs when the parts responsible for keeping the computer at a cool temperature malfunction. The system can crash suddenly as a result of this problem.
5. Stiff keyboard keys. Some buttons could become suddenly stiff and unable to function properly.
Answer:
Passing by memory address
Explanation:
When you pass a memory reference like &a the data stored at this location can be directly accessed by the function through a dereference like *a = 2;