Set 1

Multiple Choice Question

QID: 
60

What will the following code print when run?

public class TestClass{
  public static long main(String[] args){
     System.out.println("Hello");
     return 10L;
  }
}

Select 1 option

A. Hello
B. It will print nothing.
C. It will not compile
D. It will throw a Throwable at runtime.
E. None of the above.

Multiple Choice Question

QID: 
59

Which of the following are not legal Java identifiers?

Select 1 option

A. goto
B. unsigned
C. String
D. _xyz
E. $_abc
F. iLikeVeryVeryVeryVeryVeryLongIdentifiersThatDontMakeAnySenseAtAll (65 characters)

Multiple Choice Question

QID: 
58

Given the following contents of two java source files:

package util.log4j;
public class Logger {
public void log(String msg){
System.out.println(msg);
}
}

and

package util;
public class TestClass {
public static void main(String[] args) throws Exception {
Logger logger = new Logger();
logger.log("hello");
}
}

What changes, when made independently, will enable the code to compile and run?

Select 2 options
A. Replace Logger logger = new Logger(); with:
         log4j.Logger logger = new log4j.Logger();
B. Replace package util.log4j; with
         package util;
C. Replace Logger logger = new Logger(); with:
          util.log4j.Logger logger = new util.log4j.Logger();
D. Remove package util.log4j; from Logger.
E. Add import log4j; to TestClass.

Multiple Choice Question

QID: 
57

Which of the following lines can be inserted at line 1 to make the program run?

//line 1
public class TestClass{
public static void main(String[] args){
PrintWriter pw = new PrintWriter(System.out);
OutputStreamWriter osw = new OutputStreamWriter(System.out
);
pw.print("hello");
}
}

Assume that PrintWriter and OutputStreamWriter are valid classes in java.io package. 

Select 1 option

A. import java.lang.*;
B. import java.io.*;
C. import java.io.OutputStreamWriter;
D. include java.io.*;
E. include java.lang.System;

Multiple Choice Question

QID: 
56

Which of these statements concerning the use of modifiers are true?

Select 1 option

A. By default (i.e. no modifier) the member is only accessible to classes in the same package and subclasses of the class. 
B. You cannot specify visibility of local variables. 
C. Local variable always have default accessibility. 
D. Local variables can be declared as private. 
E. Local variables can only be declared as public.

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