MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Java knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What does public int start() return? |
| A. | returns start index of the input string |
| B. | returns start index of the current match |
| C. | returns start index of the previous match |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 2. |
what does public String replaceAll(string replace) do? |
| A. | Replace all characters that matches pattern with a replacement string |
| B. | Replace first subsequence that matches pattern with a replacement string |
| C. | Replace all other than first subsequence of that matches pattern with a replacement string |
| D. | Replace every subsequence of the input sequence that matches pattern with a replacement string |
| E. | do?a) Replace all characters that matches pattern with a replacement stringb) Replace first subsequence that matches pattern with a replacement stringc) Replace all other than first subsequence of that matches pattern with a replacement stringd) Replace every subsequence of the input sequence that matches pattern with a replacement string |
| Answer» E. do?a) Replace all characters that matches pattern with a replacement stringb) Replace first subsequence that matches pattern with a replacement stringc) Replace all other than first subsequence of that matches pattern with a replacement stringd) Replace every subsequence of the input sequence that matches pattern with a replacement string | |
| 3. |
What does public int end(int group) return? |
| A. | offset from last character of the subsequent group |
| B. | offset from first character of the subsequent group |
| C. | offset from last character matched |
| D. | offset from first character matched |
| Answer» B. offset from first character of the subsequent group | |
| 4. |
Which of the following matches end of the string using regular expression in java? |
| A. | \z |
| B. | \\ |
| C. | \* |
| D. | \Z |
| Answer» B. \\ | |
| 5. |
Which of the following matches nonword character using regular expression in java? |
| A. | \w |
| B. | \W |
| C. | \s |
| D. | \S |
| Answer» C. \s | |
| 6. |
Which capturing group can represent the entire expression? |
| A. | group * |
| B. | group 0 |
| C. | group * or group 0 |
| D. | None of the mentioned |
| Answer» C. group * or group 0 | |
| 7. |
Object of which class is used to compile regular expression? |
| A. | Pattern class |
| B. | Matcher class |
| C. | PatternSyntaxException |
| D. | None of the mentioned |
| Answer» B. Matcher class | |
| 8. |
What is the significance of Matcher class for regular expression in java? |
| A. | interpretes pattern in the string |
| B. | Performs match in the string |
| C. | interpreted both pattern and performs match operations in the string |
| D. | None of the mentioned. |
| Answer» D. None of the mentioned. | |
| 9. |
Which of the following is not a class of java.util.regex? |
| A. | Pattern class |
| B. | matcher class |
| C. | PatternSyntaxException |
| D. | Regex class |
| Answer» E. | |
| 10. |
WHAT_DOES_PUBLIC_INT_START()_RETURN??$ |
| A. | returns start index of the input string |
| B. | returns start index of the current match |
| C. | returns start index of the previous match |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 11. |
groupCount reports a total number of Capturing groups. |
| A. | True |
| B. | False |
| Answer» B. False | |