1Z0-809 Exam Questions

Given: class Worker extends Thread { CyclicBarrier cb; public Worker (CyclicBarrier cb) { this.cb = cb; } public void run () { try { cb.await(); System.out.println ("Worker..."); }...

Given: class Alpha { int ns; static int S; Alpha (int ns) { if (S < ns) { S = ns; this.ns = ns; } } void doPrint() { System.out.println ("ns = " + ns + " S = " + S); } } And, publi...

unSortMap.put (7, "e"); unSortMap.put (50, "m"); Map<Integer, String> treeMap = new TreeMap <Integer, String> (new Comparator<Integer> () { @Override public int compare (Integer o1...

Given the code fragments: class Employee { Optional<Address> address; Employee (Optional<Address> address) { this.address = address; } public Optional<Address> getAddress() { retur...

Given the code fragment: String color = "teal"; switch (color) { case "Red": System.out.println("Found Red"); case "Blue": System.out.println("Found Blue"); break; case "Teal": Sys...

public class Test { public static void dispResult(int [] num) { try { System.out.println (num [1] / (num[1] - num[2])); } catch (ArithmeticException e) { System.err.println("first...

Given: public class Msg { public static String doMsg(char x) { return "Good Day!"; } public static String doMsg(int y) { return "Good Luck!"; } public static void main(String[] arg...

Given the code fragment: List<String> listVal = Arrays.asList("Joe", "Paul", "Alice", "Tom"); System.out.println ( // line n1 ); Which code fragment, when inserted at line n1, enab...

Which statement is true about java.util.Stream?

Given the code fragment: String str = "Java is a programming language"; ToIntFunction<String> indexVal = str :: indexOf; //line n1 int x = indexVal.applyAsInt("Java"); //line n2 Sy...

Assume that Projects contains subdirectories that contain .class files and is passed as an argument to the recDelete () method when it is invoked. What is the result?

Given the following abstract class Shape: ```java public abstract class Shape { private int x; private int y; public abstract void draw(); public void setAnchor(int x, int y) { thi...

Given the following code: ```java public enum USCurrency { PENNY (1), NICKLE (5), DIME (10), QUARTER (25); int value; private USCurrency (int value) { this.value = value; } } publi...

Given the following code and code fragment: ```java class Sum extends RecursiveAction { //line n1 static final int THRESHOLD_SIZE = 3; int stIndex, lsIndex; int [] data; public Sum...

Given the code format: ```java class DBConfiguration { String user; String password; } ``` And the following partial class definition for `DBHandler`: ```java public class DBHandle...

Given the code fragment: ```java List<String> nl = Arrays.asList("Jim", "John", "Jeff"); Function<String, String> funVal = s -> "Hello : ".concat(s); nl.stream() .map(funVal) .forE...

Given the code fragment: ```java Path path1 = Paths.get("/app/../sys/"); Path res1 = path1.resolve("log"); Path path2 = Paths.get("/server/exe/"); Path res2 = path2.resolve("../rea...

Which two statements are true for a two-dimensional array of primitive data type?

View the exhibit. Given the code fragment: Which change enables the code fragment to print the following in the event of missing info or age out of range? James age: 20 Williams ag...

Given: What is the result?

Given: Which modification enables the code fragment to print Happy Journey!?

Given the code fragment: What is the result?

Given the code fragments: What is the result?

Path source = Paths.get("/data/december/log.txt"); Path destination = Paths.get("/data"); Files.copy(source, destination); What is the result?

The protected modifier on a Field declaration within a public class means that the field ____________.

Given: public class Case { public static void main(String[] args) { String product = "Pen"; product.toLowerCase(); product.concat(" " + product.toLowerCase()); System.out.print(pro...

Given: class CheckClass { public static int checkValue (String s1, String s2) { return s1.length() ?s2.length(); } } and the code fragment: String[] strArray = new String [] {"Tige...

Given the code fragment: Map<Integer, String> books = new TreeMap<>(); books.put (1007, "A"); books.put (1001, "B"); books.put (1001, "B"); books.put (1003, "B"); System.out.printl...

Given the code fragment: public class ForTest { public static void main(String[] args) { int[] arrar = {1,2,3}; for ( foo ) { } } } Which three are valid replacements for foo so th...

Given the definition of the Vehicle class: class Vehicle { int distance;//line n1 Vehicle (int x) { this.distance = x; } } public void increSpeed(int time) {//line n2 int timeTrave...

Given: public class X { public static void main(String[] args) { String theString = "Hello World"; System.out.println(theString.charAt(11)); } } What is the result?

Given: class Test { int sum = 0; public void doCheck(int number) { if (number % 2 == 0) { break; } else { for (int i = 0; i < number; i++) { sum += i; } } } public static void main...

Given the code fragments: interface CourseFilter extends Predicate<String> { public default boolean test (String str) { return str.equals ("Java"); } } and List<String> strs = Arra...

return output; } and the code fragment: Book b1 = new Book (101, "Java Programming"); Book b2 = new Book (102, "Java Programming"); System.out.println (b1.equals(b2)); //line n2 Wh...

The data doc, data.txt and data.xml files are accessible and contain text. Given the code fragment: Stream<Path> paths = Stream.of (Paths.get ("data.doc"), Paths.get ("data.txt"),...

Given the code fragment: Arrays.asList ("1", "John"), Arrays.asList ("2", null)); Stream<String> jInst = iStr.flatMapToTnt ((x -> x.stream ())); jInst.forEach (System.out :: print)...

Given the code fragment: Stream<Path> files = Files.walk(Paths.get(System.getProperty("user.home"))); files.forEach (fName -> { //line n1 try { Path aPath = fName.toAbsolutePath();...

Given the code fragment: 9. Connection conn = DriverManager.getConnection (dbURL, userName, password); 10. String query = "SELECT id FROM Employee"; 11. try (Statement stmt = conn....

Given the code fragment: List<String> nl = Arrays.asList ("Jim", "John", "Jeff"); Function<String, String> funVal = s -> "Hello : ".concat(s); nL.stream() .map (funVal) .peek (Syst...

Given: public class SampleClass { public static void main(String[] args) { AnotherSampleClass asc = new AnotherSampleClass(); SampleClass sc = new SampleClass(); sc = asc; System.o...

Given the code fragment: Path p1 = Paths.get("/Pics/MyPic.jpeg"); System.out.println (p1.getNameCount() + ":" + p1.getName(1) + ":" + p1.getFileName()); Assume that the Pics direct...

Given: class Vehicle implements Comparable<Vehicle>{ int vno; String name; public Vehicle (int vno, String name) { this.vno = vno; this.name = name; } public String toString () { r...

Given: public class App { public static void main (String[] args) { int i = 10; int j = 20; int k = j + i / 5; System.out.print (i + " : " + j + " : " + k); } } What is the result?

switch (accountType) { case "RD": rateOfInterest = 5; break; case "FD": rateOfInterest = 10; break; default: assert false: "No interest for this account"; //line n1 } System.out.pr...

Given: public class Test3 { public static void main(String[] args) { String names[] = new String[3]; names[0] = "Marry Brown"; names[1] = "Nancy Red"; names[2] = "Jessy Orange"; fo...

Given: public class MyFor1 { public static void main(String[] args) { int[] x = {6, 7, 8}; for (int i : x) { System.out.print(i + " "); i++; } } } What is the result?

Given the code fragment: UnaryOperator<Double> uol = s -> s*2; //line n1 List<Double> loanValues = Arrays.asList(1000.0, 2000.0); loanValues.stream() .filter(lv -> lv >= 1500) .map...

Given: ITEM ID, INTEGER: PK DESCRIP, VARCHAR (100) PRICE, REAL QUANTITY < INTEGER And given the code fragment: 9. try { 10. Connection conn = DriverManager.getConnection(dbURL, use...

Given the definition of the Country class: public class Country { public enum Continent {ASIA, EUROPE} String name; Continent region; public Country (String na, Continent reg) { na...

Given the code fragment class Test2 { int fvar; static int cvar; public static void main(String[] args) { Test2 t = new Test2(); // insert code here to write field variables } } Wh...