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MCQs

Total Questions : 19 | Page 1 of 2 pages
Question 1. The output of the following fraction of code ispublic class Test{ public static void main(String args[]){ String s1 = new String("Hello");String s2 = new String("Hellow");System.out.println(s1 = s2);}}
  1.    Throws an exception
  2.    Compilation error
  3.    Hello
  4.    Hellow
  5.    None of these
 Discuss Question
Answer: Option D. -> Hellow
Question 2. Determine output:public class Test{ public static void main(String args[]){ String s1 = "SITHA";String s2 = "RAMA";System.out.println(s1.charAt(0) > s2.charAt(0)); }}
  1.    0
  2.    false
  3.    true
  4.    Compilation error
  5.    Throws Exception
 Discuss Question
Answer: Option C. -> true
Question 3. What will be the output of the following program code?class LogicalCompare{ public static void main(String args[]){ String str1 = new String("OKAY"); String str2 = new String(str1); System.out.println(str1 == str2); }}
  1.    false
  2.    0
  3.    Displays error message
  4.    true
  5.    1
 Discuss Question
Answer: Option A. -> false
Question 4. What could be output of the following fragment of code?public class Test{ public static void main(String args[]){ String x = "hellow";int y = 9;System.out.println(x += y); } }
  1.    Throws an exception as string and int are not compatible for addition
  2.    hellow9
  3.    Compilation error
  4.    None of these
  5.    9hellow
 Discuss Question
Answer: Option B. -> hellow9
Question 5. What will be the output of the following program?public class Test{ public static void main(String args[]){String s1 = "java";String s2 = "java";System.out.println(s1.equals(s2));System.out.println(s1 == s2); }}
  1.    false false
  2.    true true
  3.    true false
  4.    false true
 Discuss Question
Answer: Option B. -> true true
Question 6. ToString() method is defined in
  1.    java.lang.util
  2.    None of these
  3.    java.lang.Object
  4.    java.lang.String
 Discuss Question
Answer: Option C. -> java.lang.Object
Question 7. What is the output of the following println statement?String str1 = "Hellow";System.out.println(str1.indexOf('t'));
  1.    1
  2.    true
  3.    -1
  4.    0
  5.    false
 Discuss Question
Answer: Option C. -> -1
Question 8. The String method compareTo() returns
  1.    true
  2.    false
  3.    -1
  4.    1
  5.    an int value
 Discuss Question
Answer: Option E. -> an int value
Question 9. What will be the output?String str1 = "abcde";System.out.println(str1.substring(1, 3));
  1.    None of these
  2.    bcd
  3.    bc
  4.    abcd
  5.    abc
 Discuss Question
Answer: Option C. -> bc
Question 10. What will be the output of the following program?public class Test{ public static void main(String args[]){String str1 = "one";String str2 = "two";System.out.println(str1.concat(str2)); }}
  1.    two
  2.    twoone
  3.    onetwo
  4.    one
  5.    None of these
 Discuss Question
Answer: Option C. -> onetwo

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