Simulacro Java 21 - 5

Which of the following is/are valid record definition(s)?. Please select 3 options.

• 
• 
• 
• 
• 

Which of these expressions will obtain the substring "456" from a string defined by

String str = """

0123\

4567"""?

Please select 1 option

• str.substring(4, 7)

• str.substring(4)

• str.substring(5, 7)

• str.substring(5, 8)

• str.substring(4, 3)

Java's exception mechanism helps in which of the following ways? Please select 2 options.

• It allows creation of new exceptions that are custom to a particular application domain.

• It improves code because error handling code is clearly separated from the main program logic.

• It enhances the security of the application by reporting errors in the logs.

• It improves the code because the exception is handled right at the place where it occured.

• It provides a vast set of standard exceptions that covers all possible exceptions.

Please select 2 options.

• printUsefulData(al, (Data d)-> { return d.value>2; }  );

• printUsefulData(al, d-> d.value>2 );

• printUsefulData(al, (d)-> return d.value>2;  );

• printUsefulData(al, Data d-> d.value>2  );

• printUsefulData(al, d -> d.value>2;   );

Please select 1 option.

• Replace the line at //1 with:

  filterData(al, x -> x.value==0);  

• Add implements java.util.function.Predicate to MyFilter definition and replace the line at //1 with:

  filterData(al, x -> x.value==0);  

• Add implements java.util.function.Predicate<Data> to MyFilter definition and replace the line at //1 with:

  filterData(al, x -> x.value==0); 

• Remove MyFilter class altogether.Change type of f from MyFilter to java.util.function.Predicate in filterData method and replace the line at //1 with:

  filterData(al, x -> x.value==0);  

• Remove MyFilter class altogether.

  Change type of f from MyFilter to java.util.function.Predicate<Data> in filterData method and replace the line at //1 with:

  filterData(al, x -> x.value==0);  

Please select 1 option.

• Compiler error at line 3.

• Runtime error at line 3.

• It will print:

  Automobile: drive

  Truck: drive

  Automobile: drive

  in that order.

• It will print:

  Automobile: drive

  Truck: drive

  Truck: drive

  in that order.

• It will print:

  Automobile: drive

  Automobile: drive

  Automobile: drive

  in that order.

Please select 1 option.

• Device should extend AutoCloseable and override close() method.

• Device should implement Closeable and override close() method.

• Device should implement Closeable and override autoClose() method.

• Device should implement AutoCloseable and override autoClose() method.

• Device should implement AutoCloseable and override close() method.

Please select 1 option.

• mon

• thu

• fri

• It will not compile.

• It will throw an exception at run time.

Please select 1 option.

• charlie andy

• andy charlie

• charlie charlie

• andy andy

• It will throw an exception at run time.

• The program will fail to compile.

• Class cast exception at runtime.

• It will print 30, 20

• It will print 30, 30.

• It will print 20, 20.