Java Practice Test Questions #1 And
Answers Graded A+
Q1: End-of-line comments that should be ignored by the compiler are denoted using
Correct Answer: Two forward slashes ( // ).
Q2: Which of the following is not a valid Java identifier? Correct Answer: m_x
Q3: Which of the following cannot cause a syntax error to be reported by the Java
compiler? Correct Answer: Extra blank lines.
Q4: Which of the following is not a syntax error? Correct Answer: System.out.println (
"Hello world!" );
Q5: Which command compiles the Java source code file Welcome.java? Correct
Answer: javac Welcome.java
Q6: Which command executes the Java class file Welcome? Class? Correct Answer:
java Welcome
Q7: Which is the output of the following statements?
System.out.print( "Hello ");
System.out.println( "World" ); Correct Answer: Hello World
Q8: Which of the following characters is the escape character? ___B___ Correct
Answer: \
Q9: Which of the following statements will print a single line containing "hello there"?
Correct Answer: System.out.print( "hello" );
System.out.println( " there" );
Q10: Which of the following statements would display the phase Java is fun? Correct
Answer: System.out.println( "\"Java is fun\"" );
Q11: When method printf requires multiple arguments, the arguments are separated
with Correct Answer: commas (,).
Q12: Which of the following statement displays Hello World? Correct Answer:
System.out.printf( "%s %s", "Hello", "World" );
Q13: All import declarations must be placed Correct Answer: before the class
declaration.
Q14: Which of the following is a variable declaration statement? Correct Answer: int
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