Answer:
39 + 3
42
393
Explanation:
In this line System.out.println("39 + 3"), the quotation marks are used to delimit a string, then when printed in the console the string is printed as-is.
In the next line: System.out.println(39 + 3), without the quotation marks, the 39+3 is treated as a normal addition and prints the result of the operation.
In the last line printed with the code System.out.println("39" + 3,; the symbol + is used to concatenate the string 39 with the number 3, since the string has no spaces they are printed together.
Answer:
d. involves analyzing end-user business requirements in order to refine project goals
Explanation:
In the software development life cycle, the implementation stage is the stage where the computer programmers begin the actual coding of the application required by the end-user. At this stage, the developer takes into account the needs and specifications of the customer.
For example, if the end-user wants a software application that can track payment records, the researcher at this stage begins using the right software to code programs that can effect this function.
Answer:
A BorderLayout corresponds to a layout type where the components are organized along geographical directions represented by NORTH, SOUTH, EAST, WEST, and CENTER.
Explanation:
The layout class is awt determines the actual placement of components in the user interface. BorderLayout is a layout where the components are organized along geographical directions represented by NORTH, SOUTH, EAST, WEST, and CENTER. For example:
Panel p = new Panel();
p.setLayout(new BorderLayout());
p.add(new TextArea(), BorderLayout.CENTER);
p.add(new Button("Close"), BorderLayout.SOUTH);
This code segment will add a textarea at the CENTER of the interface and a button 'Close' towards the SOUTH.
