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Given:
What is the result?
Answer: C
Antwort C ist richtig ; public static void main(String [] args) { String ta = "A"; ta = ta.concat("B"); String tb = "C"; ta = ta.concat(tb); ta.replace('C', 'D'); ta = ta.concat(tb); System.out.println(ta); } } ABCC
Source: Adapted from community discussion — dya45792
Given:
Given the code fragment:
Which two sets of actions, independently, enable the code fragment to print Fit?
Answer: A
The correct answer is the letter A. Even though it is in a subpackage, it is necessary to import the class from the parent package even though it is public to have access to the method, so we have to put the "import clothing.Shirt;" on line n1. In line 2 just instantiate the variable "color" that is inside the if in the next line that will print "Fit". I tested the code if you want: * Shirt.java: --------------------------------------------------------------------------- package clothing; public class Shirt { public static String getColor() { return "Green"; } } --------------------------------------------------------------------------- * Jeans.java: package clothing.pants; import clothing.Shirt; public class Jeans { public void matchShirt () { String color = Shirt.getColor(); if(color.equals("Green")) { System.out.print("Fit"); } } public static void main(String[] args) { Jeans trouser = new Jeans(); trouser.matchShirt(); } }
Source: Adapted from community discussion — iSnover
Given the code fragments:
And:
Which statement is true?
Answer: C
after line 11, nobody referencing to s1, thus makes s1 gc eligible. Even though s2 is null, it is not eligible for gc, because s3 still pointing to it. S3 is not eligible for gc because s1 is pointing to it. Only object that nobody pointing to is S1. After line 11 only one object is eligible for GC = S1.
Source: Adapted from community discussion — Harid
Given the code fragment:
What is the result?
Answer: D
Tested any answer is correct public static void main(String[] args) { int wd = 0; String days[] = {"sun","mon","wed","sat"}; for(String s : days){ switch (s) { case "sat": case "sun": wd -=1; break; case "mon": wd++; case "wed": wd +=2; } System.out.print(wd + " "); //Output = -1 2 4 3 }
Source: Adapted from community discussion — Bossie
Given the code fragment:
What is the result?
Answer: D
The answer is the letter D, in the second line instance 32 which is not a valid day, the code compiles because the Local.Date.of method accepts any integer number, but if it is not in the range it throws an exception.
Source: Adapted from community discussion — iSnover
Given:
What is the result?
Answer: A
The correct answer is letter A. This is a type of question that you should be very careful about. Because in the instantiation line of the variable "k" there is a parenthesis an operation that changes the variable "j" (20) adding the value of "i" (10) making the new value of "j" to 30, as it is between parenthesis it adds the value to the variable K and then divides it by 5. If you have doubts, I also tested the code, it is here: public static void main(String[] args) { int i = 10; int j = 20; int k = (j += i) / 5; System.out.print(i + ":" + j + ":" + k); } }
Source: Adapted from community discussion — iSnover
Given:
And given the code fragment:
What is the result?
Answer: E
Answer is E. To test: interface Downloadable { public void download(); } interface Readable extends Downloadable { // line n1 public void readBook (); } abstract class Book implements Readable { // line n2 public void readBook() { System.out.println("Read Book"); } } class EBook extends Book { // line n3 public void readBook() { System.out.println("Read E-Book"); } //public void download() {} // It is necessary to implement the download() method in this class to compile. } public class Test { public static void main (String [] args) { Book book1 = new EBook(); book1.readBook(); } }
Source: Adapted from community discussion — carloswork
Given this class:
Which two changes would encapsulate this class and ensure that the area field is always equal to length * height whenever the Rectangle class is used? (Choose two.)
Answer: AC
The goal here is to ensure that the area field is always updated correctly whenever length or height is modified. Encapsulation involves restricting direct access to fields and ensuring that they are modified through controlled methods. Given the provided options, here are the changes that would encapsulate the class and ensure that the area field is always equal to length * height: Call the setArea method at the end of the setHeight method. This ensures that whenever the height is set, the area is recalculated. Call the setArea method at the end of the setLength method. Similarly, this ensures that whenever the length is set, the area is recalculated. So, the correct choices are A and C:
Source: Adapted from community discussion — 7df49fb
Given:
What is the result?
Answer: B
The right answer is the letter B, it prints the values of the variables x and Y on the last line, the test type object is just a distractor, be careful.
Source: Adapted from community discussion — iSnover
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