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public class Base { public static final String FOO = “foo”; public static void main(String[] args) { Base b = new Base(); Sub s = new Sub(); System.out.print(Base.FOO); System.out.print(Sub.FOO); System.out.print(b.FOO); System.out.print(s.FOO); System.out.print(((Base)s).FOO); } } class Sub extends Base {public static final String FOO=bar;} What is the result?()
- A、 foofoofoofoofoo
- B、 foobarfoobarbar
- C、 foobarfoofoofoo
- D、 foobarfoobarfoo
- E、 barbarbarbarbar
- F、 foofoofoobarbar
- G、 foofoofoobarfoo
参考答案
更多 “ public class Base { public static final String FOO = “foo”; public static void main(String[] args) { Base b = new Base(); Sub s = new Sub(); System.out.print(Base.FOO); System.out.print(Sub.FOO); System.out.print(b.FOO); System.out.print(s.FOO); System.out.print(((Base)s).FOO); } } class Sub extends Base {public static final String FOO=bar;} What is the result?() A、 foofoofoofoofooB、 foobarfoobarbarC、 foobarfoofoofooD、 foobarfoobarfooE、 barbarbarbarbarF、 foofoofoobarbarG、 foofoofoobarfoo” 相关考题
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publicclassBase{publicstaticfinalStringFOO=foo”;publicstaticvoidmain(String[]args){Baseb=newBase();Subs=newSub();System.out.print(Base.FOO);System.out.print(Sub.FOO);System.out.print(b.FOO);System.out.print(s.FOO);System.out.print(((Base)s).FOO);}}classSubextendsBase{publicstaticfinalStringFOO=bar;}Whatistheresult?()A.foofoofoofoofooB.foobarfoobarbarC.foobarfoofoofooD.foobarfoobarfooE.barbarbarbarbarF.foofoofoobarbarG.foofoofoobarfoo
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阅读下列代码 public class Test { public static void main(String args[]) { String s = "Test"; switch (s) { case "Java": System.out.print("Java"); break; case "Language": System.out.print("Language"); break; case "Test": System.out.print("Test"); break; } } } 其运行结果是( )。A.JavaB.LanguageC.TestD.编译出错
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下列代码的执行结果是______。 public class ex55 { public static void main(String args[] ) { String s1=new String("hello"); String s2=new String("hello"); System.out.print (s1==s2); System.out.print (","); System.out.println (s1.equals (s2)); } }A.true, falseB.true, trueC.false, trueD.false, false
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以下程序调试结果为:class Base{Base(){int i = 100;System.out.print (i);}}public class Pri extends Base{static int i = 200;public static void main(String argv[]){Pri p = new Pri();System.out.print(i);}}
A.编译错误B.200C.100200D.100
考题
class One { public One() { System.out.print(1); } } class Two extends One { public Two() { System.out.print(2); } } class Three extends Two { public Three() { System.out.print(3); } } public class Numbers{ public static void main( String[] argv) { new Three(); } } What is the result when this code is executed?() A、 1B、 3C、 123D、 321E、 The code rims with no output.
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public class X { public static void main(String [] args) { try { badMethod(); System.out.print(“A”); } catch (Exception ex) { System.out.print(“C”); } finally { System.out.print(“B”); } System.out.print(“D”); } public static void badMethod() { throw new Error(); } } What is the result?() A、 ABCDB、 Compilation fails.C、 C is printed before exiting with an error message.D、 BC is printed before exiting with an error message.E、 BCD is printed before exiting with an error message.
考题
class Bird { static void talk() { System.out.print("chirp "); } } class Parrot extends Bird { static void talk() { System.out.print("hello "); } public static void main(String [] args) { Bird [] birds = {new Bird(), new Parrot()}; for( Bird b : birds) b.talk(); } } 结果为:() A、chirp chirpB、chirp helloC、hello helloD、编译失败
考题
class Foo { private int x; publicFoo(intx) {this.x=x; } public void setX( int x) { this.x = x; } public int getX() { return x; } } public class Gamma { static Foo fooBar( Foo foo) { foo = new Foo( 100); return foo; } public static void main( String[] args) { Foo foo = new Foo( 300); System.out.print( foo.getX() + “-“); Foo fooFoo = fooBar( foo); System.out.print( foo.getX() + “-“); System.out.print( fooFoo.getX() + “-“); foo = fooBar( fooFoo); System.out.print( foo.getX() + “-“); System.out.prmt( fooFoo.getX()); } } What is the output of this program?()A、 300-100-100-100-100B、 300-300-100-100-100C、 300-300-300-100-100D、 300-300-300-300-100
考题
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?() A、 ACB、 BDC、 ACDD、 ABCDE、 Compilation fails.
考题
public class Delta { static boolean foo(char c) { System.out.print(c); return true; } public static void main( String[] argv ) { int i =0; for ( foo(‘A’); foo(‘B’)(i2); foo(‘C’)){ i++ ; foo(‘D’); } } } What is the result?() A、 ABDCBDCBB、 ABCDABCDC、 Compilation fails.D、 An exception is thrown at runtime.
考题
class Passer { static final int x = 5; public static void main(String [] args) { new Passer().go(x); System.out.print(x); } void go(int x) { System.out.print(++x); } } 结果是什么?() A、55B、56C、65D、66
考题
class Beverage { Beverage() { System.out.print("beverage "); } } class Beer extends Beverage { public static void main(String [] args) { Beer b = new Beer(14); } public int Beer(int x) { this(); System.out.print("beer1 "); } public Beer() { System.out.print("beer2 "); } } 结果是什么?() A、beer1 beverageB、beer2 beverageC、beverage beer1D、编译失败
考题
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?() A、 BDB、 BCDC、 BDED、 BCDEE、 ABCDEF、 Compilation fails.
考题
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? () A、 ABB、 BCC、 ABCD、 BCDE、 Compilation fails.
考题
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:() A、innerB、inner outerC、middle outerD、inner middle outer
考题
class Base { Base() { System.out.print(“Base”); } } public class Alpha extends Base { public static void main( String[] args ) { new Alpha(); new Base(); } } What is the result?() A、 BaseB、 BaseBaseC、 Compilation fails.D、 The code runs with no output.E、 An exception is thrown at runtime.
考题
public class Threads4 { public static void main (String[] args) { new Threads4().go(); } public void go() { Runnable r = new Runnable() { public void run() { System.out.print(”foo”); } }; Thread t = new Thread(r); t.start(); t.start(); } } What is the result?() A、 Compilation fails.B、 An exception is thrown at runtime.C、 The code executes normally and prints „foo”.D、 The code executes normally, but nothing is printed.
考题
单选题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?()A
BDB
BCDC
BDED
BCDEE
ABCDEF
Compilation fails.
考题
单选题public class Delta { static boolean foo(char c) { System.out.print(c); return true; } public static void main( String[] argv ) { int i =0; for ( foo(‘A’); foo(‘B’)(i2); foo(‘C’)){ i++ ; foo(‘D’); } } } What is the result?()A
ABDCBDCBB
ABCDABCDC
Compilation fails.D
An exception is thrown at runtime.
考题
单选题public class X { public static void main(String [] args) { try { badMethod(); System.out.print(“A”); } catch (Exception ex) { System.out.print(“C”); } finally { System.out.print(“B”); } System.out.print(“D”); } public static void badMethod() { throw new Error(); } } What is the result?()A
ABCDB
Compilation fails.C
C is printed before exiting with an error message.D
BC is printed before exiting with an error message.E
BCD is printed before exiting with an error message.
考题
单选题class Base { Base() { System.out.print(“Base”); } } public class Alpha extends Base { public static void main( String[] args ) { new Alpha(); new Base(); } } What is the result?()A
BaseB
BaseBaseC
Compilation fails.D
The code runs with no output.E
An exception is thrown at runtime.
考题
单选题public class Threads4 { public static void main (String[] args) { new Threads4().go(); } public void go() { Runnable r = new Runnable() { public void run() { System.out.print(”foo”); } }; Thread t = new Thread(r); t.start(); t.start(); } } What is the result?()A
Compilation fails.B
An exception is thrown at runtime.C
The code executes normally and prints „foo”.D
The code executes normally, but nothing is printed.
考题
单选题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? ()A
ABB
BCC
ABCD
BCDE
Compilation fails.
考题
单选题下列程序的运行结果是( )。class Shape{ public Shape(){ System.out.print("Shape"); }}class Circle extends Shape{ public Circle(){ System.out.print("Circle"); }}public class Test{ public static void main(String[]args){ Shape d=new Circle(); }}A
ShapeB
CircleC
ShapeCircleD
程序有错误
考题
单选题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?()A
ACB
BDC
ACDD
ABCDE
Compilation fails.
考题
单选题class Passer { static final int x = 5; public static void main(String [] args) { new Passer().go(x); System.out.print(x); } void go(int x) { System.out.print(++x); } } 结果是什么?()A
55B
56C
65D
66
考题
单选题public class Base { public static final String FOO = “foo”; public static void main(String[] args) { Base b = new Base(); Sub s = new Sub(); System.out.print(Base.FOO); System.out.print(Sub.FOO); System.out.print(b.FOO); System.out.print(s.FOO); System.out.print(((Base)s).FOO); } } class Sub extends Base {public static final String FOO=bar;} What is the result?()A
foofoofoofoofooB
foobarfoobarbarC
foobarfoofoofooD
foobarfoobarfooE
barbarbarbarbarF
foofoofoobarbarG
foofoofoobarfoo
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