A: 0
B: 1
C: 4
D: Compilation fails.
E: An exception is thrown at runtime.
举一反三
- 11. String test = “This is a test”； 12. String[] tokens = test.split（”\s”）； 13. System.out.println（tokens.length）； What is the result？（） A: 0 B: 1 C: 4 D: Compilation fails. E: An exception is thrown at runtime.
- Given： 11. String test = "This is a test"； 12. String[] tokens = test.split（"\s"）； 13. System.out.println（tokens.length）； What is the result？（） A: An exception is thrown at runtime. B: 1 C: 4 D: Compilation fails. E: 0
- Given： 11. String test = "This is a test"； 12. String[] tokens = test.split（"\s"）； 13. System.out.println（tokens.length）； What is the result？（） A: An exception is thrown at runtime. B: 1 C: 4 D: Compilation fails. E: 0
- Given： 11. String test = "This is a test"； 12. String[] tokens = test.split（"/s"）； 13. System.out.println（tokens.length）； What is the result？（） A: A An exception is thrown at runtime. B: B 1 C: C 4 D: D Compilation fails. E: E 0
- Given： 11.String test = "This is a test"； 12.String[] tokens = test.split（"\s"）； 13.System.out.println（tokens.length）； What is the result？（） A: 0 B: 1 C: 4 D: Compilation fails.
内容
- 0
11. String test = “Test A. Test B. Test C.”； 12. // insert code here 13. String[] result = test.split（regex）； Which regular expression inserted at line 12 will correctly split test into “Test A，” “Test B，” and “Test C”？（） A: String regex = “”； B: String regex = “ “； C: String regex = “.*“. D: String regex = “\\s” E: String regex = “\\.\\s*”； F: String regex = “\\w[ \.] +“；
- 1
11. String test = “Test A. Test B. Test C.”； 12. // insert code here 13. String[] result = test.split（regex）； Which regular expression inserted at line 12 will correctly split test into “Test A，” “Test B，” and “Test C”？（） A: String regex = “”； B: String regex = “ “； C: String regex = “.*“. D: String regex = “\\s” E: String regex = “\\.\\s*”； F: String regex = “\\w[ \.] +“；
- 2
String a = “ABCD”； String b = a.toLowerCase（）； b.replace（‘a’， ‘d’）； b.replace（‘b’， ‘c’）； System.out.println（b）； What is the result？ （） A: abcd B: ABCD C: dccd D: dcba E: Compilation fails. F: An exception is thrown at runtime.
- 3
System.out.println（Math.sqrt（-4D））； What is the result？（） A: –2 B: NaN C: Infinity D: Compilation fails. E: An exception is thrown at runtime.
- 4
Given classes defined in two different files： What is the result of executing XMLMessage.main？（） A: text B: Compilation fails. C: <msg>text</msg> D: An exception is thrown at runtime.