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.