finally
exception finished
finally exception finished
Compilation fails.
第1题:
static void test() { try { String x=null; System.out.print(x.toString() +“ “); } finally { System.out.print(“finally “); } } public static void main(String[] args) { try { test(); } catch (Exception ex) { System.out.print(”exception “); } } What is the result?()
第2题:
public class X { public static void main(String [] args) { try { badMethod(); System.out.print(“A”); } catch (Exception ex) { System.out.print(“B”); } finally { System.out.print(“C”); } System.out.print(“D”); } public static void badMethod() {} } What is the result?()
第3题:
public static void main(String[] args) { try { args=null; args[0] = “test”; System.out.println(args[0]); } catch (Exception ex) { System.out.println(”Exception”); } catch (NullPointerException npe) { System.out.println(”NullPointerException”); } } What is the result?()
第4题:
public class X { public static void main(String [] args) { try { badMethod(); System.out.print(“A”); } catch (RuntimeException ex) { System.out.print(“B”); } catch (Exception ex1) { System.out.print(“C”); } finally { System.out.print(“D”); } System.out.print(“E”); } public static void badMethod() { throw new RuntimeException(); } } What is the result?()
第5题:
class Flow { public static void main(String [] args) { try { System.out.print("before "); doRiskyThing(); System.out.print("after "); } catch (Exception fe) { System.out.print("catch "); } System.out.println("done "); } public static void doRiskyThing() throws Exception { // this code returns unless it throws an Exception } } 可能会产生下面哪两项结果?()
第6题:
现有: class Birds { public static void main (String [] args) { try { throw new Exception () ; } catch (Exception e) { try { throw new Exception () ; } catch (Exception e2) { System.out.print ("inner "); } System. out.print ( "middle" ) ; } System.out.print ("outer") ; } } 结果是()
第7题:
import java.io.IOException; public class ExceptionTest( public static void main (String[]args) try ( methodA(); ) catch (IOException e) ( system.out.printIn(“Caught IOException”); ) catch (Exception e) ( system.out.printIn(“Caught Exception”); ) ) public void methodA () { throw new IOException (); } What is the result?()
第8题:
null
finally
null finally
Compilation fails.
finally exception
第9题:
test end
Compilation fails.
test runtime end
test exception end
A Throwable is thrown by main at runtime.
第10题:
AB
BC
ABC
BCD
Compilation fails.
第11题:
Finally
Compilation fails.
The code runs with no output.
An exception is thrown at runtime.
第12题:
inner
inner outer
middle outer
inner middle outer
第13题:
public class Test { public static void aMethod() throws Exception { try { throw new Exception(); } finally { System.out.println(“finally”); } } public static void main(String args[]) { try { aMethod(); } catch (Exception e) { System.out.println(“exception”); } System.out.println(“finished”); } } What is the result?()
第14题:
What is wrong with the following code?() class MyException extends Exception {} public class Qb4ab { public void foo() { try { bar(); } finally { baz(); } catch (MyException e) {} } public void bar() throws MyException { throw new MyException(); } public void baz() throws RuntimeException { throw new RuntimeException(); } }
第15题:
public class Foo { public static void main(String[] args) { try { return; } finally { System.out.println( “Finally” ); } } } What is the result?()
第16题:
public class X { public static void main(String [] args) { try { badMethod(); System.out.print(“A”); } catch (Exception ex) { System.out.print(“B”); } finally { System.out.print(“C”); } System.out.print(“D”); } public static void badMethod() { throw new RuntimeException(); } } What is the result? ()
第17题:
static void test() throws Error { if (true) throw new AssertionError(); System.out.print(”test “); } public static void main(String[] args) { try { test(); } catch (Exception ex) { System.out.print(”exception “); } System.out.print(”elld “); } What is the result?()
第18题:
class Birds { public static void main(String [] args) { try { throw new Exception(); } catch (Exception e) { try { throw new Exception(); } catch (Exception e2) { System.out.print("inner "); } System.out.print("middle "); } System.out.print("outer "); } } 结果为:()
第19题:
BD
BCD
BDE
BCDE
ABCDE
Compilation fails.
第20题:
inner outer
middle outer
inner middle outer
.编译失败
第21题:
Since the method foo() does not catch the exception generated by the method baz(), it must declare the RuntimeException in its throws clause.
A try block cannot be followed by both a catch and a finally block.
An empty catch block is not allowed.
A catch block cannot follow a finally block.
A finally block must always follow one or more catch blocks.
第22题:
end
Compilation fails.
exception end
exception test end
A Throwable is thrown by main.
An Exception is thrown by main.
第23题:
finally
exception finished
finally exception finished
Compilation fails.
第24题:
AC
BD
ACD
ABCD
Compilation fails.