Ports 1–1023 are called well-known ports or which of the following?
What will be an ideal response?
reserved ports
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Write code statements to create a DecimalFormat object that will round a formatted value to 4 decimal places. Then write a statement that uses that object to print the value of result, properly formatted.
What will be an ideal response?
Analyze the following code:
``` public class Test { public static void main(String[] args) { B b = new B(); b.m(5); System.out.println("i is " + b.i); } } class A { int i; public void m(int i) { this.i = i; } } class B extends A { public void m(String s) { } } ``` a. The program has a compile error, because m is overridden with a different signature in B. b. The program has a compile error, because b.m(5) cannot be invoked since the method m(int) is hidden in B. c. The program has a runtime error on b.i, because i is not accessible from b. d. The method m is not overridden in B. B inherits the method m from A and defines an overloaded method m in B.
A(n) ________________ is a widget that shows a fixed number of recent posts to a given social media account or shows posts that meet certain criteria.
Fill in the blank(s) with the appropriate word(s).
The personal area network was created in the late ____.?
A. ?1970s B. ?1980s C. ?1990s D. ?2000s