Baz has the value of “”
Baz has the value of null
Baz has the value of “red”
Baz has the value of “blue”
Bax has the value of “green”
The program throws an exception.
第1题:
public class Test { public static void main (Stringargs) { String foo = args[1]; String bar = args; String baz = args; System.out.printIn(“baz = ” + baz); } } And the output: Baz = 2 Which command line invocation will produce the output?()
第2题:
public class Test { public static void main (String args) { class Foo { public int i = 3; } Object o = (Object) new Foo(); Foo foo = (Foo)o; System.out.printIn(foo. i); } } What is the result?()
第3题:
public class Test { public static void main (String[]args) { String foo = args[1]; String bar = args[2]; String baz = args[3]; System.out.printIn(“baz = ” + baz); } } And the output: Baz = 2 Which command line invocation will produce the output?()
第4题:
public class test( public static void main(stringargs){ string foo = args [1]; string foo = args ; string foo = args ; } ) And command line invocation: Java Test red green blue What is the result? ()
第5题:
int index = 1; String [] test = new String[3]; String foo = test[index]; What is the result?()
第6题:
interface foo { int k = 0; } public class test implements Foo ( public static void main(String args) ( int i; Test test = new test (); i= test.k; i= Test.k; i= Foo.k; ) ) What is the result? ()
第7题:
Compilation succeeds.
An error at line 2 causes compilation to fail.
An error at line 9 causes compilation to fail.
An error at line 10 causes compilation to fail.
An error at line 11 causes compilation to fail.
第8题:
Baz has the value of “”
Baz has the value of null
Baz has the value of “red”
Baz has the value of “blue”
Bax has the value of “green”
The program throws an exception.
第9题:
i = 3
Compilation fails.
A ClassCastException is thrown at line 6.
A ClassCastException is thrown at line 7.
第10题:
Foo has the value “”
Foo has the value null
An exception is thrown
The code will not compile
第11题:
Java Test 2222
Java Test 1 2 3 4
Java Test 4 2 4 2
Java Test 4 3 2 1
第12题:
foofoofoofoofoo
foobarfoobarbar
foobarfoofoofoo
foobarfoobarfoo
barbarbarbarbar
foofoofoobarbar
foofoofoobarfoo
第13题:
int index = 1; String test = new String; String foo = test[index]; What is the result?()
第14题:
public class Test { public static void main( String[] args) { String foo = args[1]; String bar = args[2]; String baz = args[3]; System.out.println(“baz = “ + baz); } } And the command line invocation: java Test red green blue What is the result?()
第15题:
public class Test { public static void main(String args[]) { class Foo { public int i = 3; } Object o = (Object)new Foo(); Foo foo = (Foo)o; System.out.println(“i = “ + foo.i); } } What is the result?()
第16题:
1.public class Test { 2.public static void main (String args[]) { 3.class Foo { 4.public int i = 3; 5.} 6.Object o = (Object) new Foo(); 7.Foo foo = (Foo)o; 8.System.out.printIn(foo. i); 9. } 10.} What is the result?()
第17题:
public class Test { public static void main(String [] args) { System.out.println(args.length > 4 && args[4].equals(“-d”)); } } If the program is invoked using the command line: java Test One Two Three –d What is the result?()
第18题:
Compilation will fail.
Compilation will succeed and the program will print “3”
Compilation will succeed but the program will throw a ClassCastException at line 6.
Compilation will succeed but the program will throw a ClassCastException at line 7.
第19题:
true
false
Compilation fails.
An exception is thrown at runtime.
第20题:
baz =
baz = null
baz = blue
Compilation fails.
An exception is thrown at runtime.
第21题:
Java Test 2222
Java Test 1 2 3 4
Java Test 4 2 4 2
Java Test 4 3 2 1
第22题:
Hello
Hello Foo
Hello world
Compilation fails.
The code does not run.
第23题:
An exception is thrown.
The code will not compile.
The program prints “null”
The program prints “blue”
The program prints “green”