单选题Given: What is the output?()A 42B 420C 462D 42042E Compilation fails.F An exception is thrown at runtime.

题目
单选题
Given: What is the output?()
A

42

B

420

C

462

D

42042

E

Compilation fails.

F

An exception is thrown at runtime.

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第1题:

Given:What is the output?()

A.42

B.420

C.462

D.42042

E.Compilation fails.

F.An exception is thrown at runtime.


参考答案:D

第2题:

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.

正确答案:A

第3题:

Click the Exhibit button. Given: ClassA a = new ClassA(); a.methodA(); What is the result? ()

A.Compilation fails.

B.ClassC is displayed.

C.The code runs with no output.

D.An exception is thrown at runtime.


参考答案:D

第4题:

单选题
Given: What is the result?()
A

collie

B

harrier

C

Compilation fails.

D

collie harrier

E

An exception is thrown at runtime.


正确答案: A
解析: 暂无解析

第5题:

String a = null;  a.concat(“abc”);  a.concat(“def”);  System.out.println(a);   What is the result?()  

  • A、 abc
  • B、 null
  • C、 abcdef
  • D、 Compilation fails.
  • E、 The code runs with no output.
  • F、 An exception is thrown at runtime.

正确答案:F

第6题:

public class TestString 1 {  public static void main(String[] args) {  String str = “420”;  str += 42;  System.out.print(str);  }  }  What is the output?()

  • A、 42
  • B、 420
  • C、 462
  • D、 42042
  • E、 Compilation fails.
  • F、 An exception is thrown at runtime.

正确答案:D

第7题:

public classYippee{ public static void main(String[]args){ for(intx=1;xSystem.out.print(args[x]+""); } } } and two separate command line invocations:j avaYippee javaYippee1234 What is the result?()

  • A、No output is produced.       123
  • B、No output is produced.        234
  • C、No output is produced.       1234
  • D、An exception is thrown at runtime.        123
  • E、An exception is thrown at runtime.         234
  • F、An exception is thrown at runtime.        1234

正确答案:B

第8题:

Given:What is the result when the go() method is invoked?()

A.00

B.0001

C.000120

D.00012021

E.Compilation fails.

F.An exception is thrown at runtime.


参考答案:C

第9题:

单选题
public class TestString 1 {  public static void main(String[] args) {  String str = “420”;  str += 42;  System.out.print(str);  }  }  What is the output?()
A

 42

B

 420

C

 462

D

 42042

E

 Compilation fails.

F

 An exception is thrown at runtime.


正确答案: A
解析: 暂无解析

第10题:

单选题
Given: What is the result?()
A

r, t, t,

B

r, e, o,

C

Compilation fails.

D

An exception is thrown at runtime.


正确答案: B
解析: 暂无解析

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