单选题Given: What is the result?()A [1, 2, 3, 5]B [2, 1, 3, 5]C [2, 5, 3, 1]D [5, 3, 2, 1]E [1, 3, 5, 2]...
Sunday, February 18, 2024
单选题A team of programmers is involved in reviewing a proposed design for a new utility class. After some discussion, they realize that the current design allows other classes to access methods in the utility class that should be accessible only to methods ...
Sunday, March 17, 2024
单选题Given: 12.Date date = new Date(); 13.df.setLocale(Locale.ITALY); 14.String s = df.format(date); The variable df is an object of type DateFormat that has been initialized in line 11. What is the result if this code is run on December 14, 2000?()A The va...
Saturday, April 27, 2024
多选题Given a class whose instances, when found in a collection of objects, are sorted by using the compare To method, which two statements are true?()AThe class implements java.lang.Comparable.BThe class implements java.util.Comparator.CThe interface used t...
Wednesday, April 24, 2024
多选题A developer is creating a class Book, that needs to access class Paper. The Paper class is deployed in a JAR named myLib.jar. Which three, taken independently, will allow the developer to use the Paper class while compiling the Bookclass?()AThe JAR fi...
Friday, May 10, 2024
单选题Given that the elements of a PriorityQueue are ordered according to natural ordering,and: What is the result?()A apple pearB banana pearC apple appleD apple bananaE banana banana...
多选题Given: And MainClass exists in the /apps/com/company/application directory. Assume the CLASSPATH environment variable is set to "." (current directory). Which two java commands entered at the commandline will run MainClass?()Ajava MainClass if run fro...
单选题Given a valid DateFormat object named df,and 16.Date d = new Date(0L); 17.String ds = "December 15, 2004"; 18.//insert code here What updates d’s value with the date represented by ds?()A 18. d = df.parse(ds);B 18. d = df.getDate(ds);C 18. try {19. d =...
单选题Given: Which command-line invocations will compile?()A javac Mule.javaB javac -source 1.3 Mule.javaC javac -source 1.4 Mule.javaD javac -source 1.5 Mule.java...
Saturday, December 30, 2023
多选题Which two statements are true?()AIt is possible for more than two threads to deadlock at once.BThe JVM implementation guarantees that multiple threads cannot enter into a deadlocked state.CDeadlocked threads release once their sleep() method’s sleep du...
多选题Which two scenarios are NOT safe to replace a StringBuffer object with a StringBuilder object?()AWhen using versions of Java technology earlier than 5.0.BWhen sharing a StringBuffer among multiple threads.CWhen using the java.io class StringBufferInput...
Thursday, November 16, 2023
单选题Given: 1.package test; 2. 3.class Target { 4.public String name = "hello";5.} What can directly access and change the value of the variable name?()A any classB only the Target classC any class in the test packageD any class that extends Target...
单选题Given the following directory structure: bigProject |--source ||--Utils.java| |--classes |-- And the following command line invocation: javac -d classes source/Utils.java Assume the current directory is bigProject,what is the result?()A If the compile ...
单选题Given: 11.String test = "This is a test"; 12.String[] tokens = test.split("/s"); 13.System.out.println(tokens.length); What is the result?()A 0B 1C 4D Compilation fails....
单选题Given: What is the result?()A X, followed by an Exception.B No output, and an Exception is thrown.C Compilation fails due to an error on line 14.D Compilation fails due to an error on line 16.E Compilation fails due to an error on line 17....
单选题Given: What is the result?()A Compilation succeeds.B Compilation fails due to multiple errors.C Compilation fails due to an error only on line 20.D Compilation fails due to an error only on line 21.E Compilation fails due to an error only on line...
多选题Which two code fragments will execute the method doStuff() in a separate thread?()Anew Thread() {public void run() { doStuff(); }};Bnew Thread() {public void start() { doStuff(); }};Cnew Thread() {public void start() { doStuff(); }}.run();Dnew Thread()...
多选题Given: Which two methods, inserted independently at line 17, correctly complete the Sales class?()Adouble getSalesAmount() { return 1230.45; }Bpublic double getSalesAmount() { return 1230.45; }Cprivate double getSalesAmount() { return 1230.45; }Dprote...