Java认证模考试题（三）

Question: 14

A. char args

B. char args

C. String arg

D. String args

Explanation: 

Correct Answer: C 14 of 60

Question: 15
A. float f = new float;

B. float f = new float;

C. float f = new float;

D. float f = new float;

E. float f = new float;

Explanation: 

Correct Answer: A,B,D,E 15 of 60

Question: 16

Which result of the following expressions equals to the number of the array elements?

B. m.length

C. m.length()+1

D. m.length+1

Explanation: 

Correct Answer: B 16 of 60

Question: 17

Which statements are true?

B. args[0] = MyTest

C. args[0] = a

D. args[1]= 'b'

Explanation: 

Correct Answer: C 17 of 60

Question: 18

public class Test{

long a = new long[10];

public static void main ( String arg ) {

System.out.println ( a );

}

}

Which statement is true?

B. Output is 0.

C. When compile, some error will occur.

D. When running, some error will occur.

Explanation: 

Correct Answer: B 18 of 60 |||

uestion: 19

boolean m = true;

if ( m = false )

System.out.println(False);

else

System.out.println(True);

What is the result of the execution?

B. True

C. None

D. An error will occur when running.

Explanation: 

Correct Answer: A 19 of 60

Question: 20

public class Test{

public static void main(String arg){

int i = 5;

do {

System.out.println(i);

} while (--i>5)

System.out.println("finished");

}

}

What will be output after execution?

B. 4

C. 6

D. Finished

E. None

Explanation: 

Correct Answer: A,D 20 of 60