Given: class Alien { String invade(short ships) { return "a few"; } String invade(short... ships) { return "many"; } } class Defender { public static void main(String [] args) { System.out.println(new Alien().invade(7)); } } What is the result?

Given: class Eggs { int doX(Long x, Long y) { return 1; } int doX(long... x) { return 2; } int doX(Integer x, Integer y) { return 3; } int doX(Number n, Number m) { return 4; } public static void main(String[] args) { new Eggs().go(); } void go () { short s = 7; System.out.print(doX(s,s) + " "); System.out.println(doX(7,7)); } }

Which is true? (Choose all that apply.)

Given: 1. class Convert { 2. public static void main(String[] args) { 3. Long xL = new Long(456L); 4. long x1 = Long.valueOf("123"); 5. Long x2 = Long.valueOf("123"); 6. long x3 = xL.longValue(); 7. Long x4 = xL.longValue(); 8. Long x5 = Long.parseLong("456"); 9. long x6 = Long.parseLong("123"); 10. } 11. } Which will compile using Java 5, but will NOT compile using Java 1.4? (Choose all that apply.)

Given: 1. class Bigger { 2. public static void main(String[] args) { 3. // insert code here 4. } 5. } 6. class Better { 7. enum Faster {Higher, Longer}; 8. } Which, inserted independently at line 3, will compile? (Choose all that apply.)

Given two files: 1. class One { 2. public static void main(String[] args) { 3. int assert = 0; 4. } 5. } 1. class Two { 2. public static void main(String[] args) { 3. assert(false); 4. } 5. } And the four command-line invocations: javac -source 1.3 One.java javac -source 1.4 One.java javac -source 1.3 Two.java javac -source 1.4 Two.java What is the result? (Choose all that apply.)

Given: class Mixer { Mixer() { } Mixer(Mixer m) { ml = m;} Mixer m1; public static void main(String[] args) { Mixer m2 = new Mixer(); Mixer m3 = new Mixer(m2); m3.go(); Mixer m4 = m3.m1; m4.go(); Mixer m5 = m2.m1; m5.go(); } void go() { System.out.print("hi "); } } What is the result?

Given: 1. class Zippy { 2. String[] x; 3. int[] a [] = {{1,2}, {l}}; 4. Object c = new long [4] ; 5. Object[] d = x; 6. } What is the result?

Given: class Fizz { int x = 5; public static void main(String[] args) { final Fizz f1 = new Fizz(); Fizz f2 = new Fizz(); Fizz f3 = FizzSwitch(f1,f2); System.out.println((f1 == f3) + " " + (f1.x == f3.x)); } static Fizz FizzSwitch(Fizz x, Fizz y) { final Fizz z = x; z.x = 6; return z; } } What is the result?

Given: 1. class Eco { 2. public static void main(String[] args) { 3. Eco e1 = new Eco(); 4. Eco e2 = new Eco(); 5. Eco e3 = new Eco(); 6. e3.e = e2; 7. e1.e = e3; 8. e2 = null; 9. e3 = null; 10. e2.e = el; 11. e1 = null; 12. } 13. Eco e; 14. } At what point is only a single object eligible for GC?

Given: class Clidders { public final void flipper() { System.out.print(" Flip a Clidder"); } } public class Clidlets extends Clidders { public void flipper() { System.out.print(" Flip a Clidlet"); super.flipper(); } public static void main(String [] args) { new Clidlets().flipper(); } } What is the result?

Given:class Clidder { private final void flipper() { System.out.print(" Flip a Clidder"); }}public class Clidlet extends Clidder { public final void flipper() { System.out.print(" Flip a Clidlet"); } public static void main(String [] args) { new Clidlet().flipper(); }}What is the result?

Given: 1. class Comp2 { 2. public static void main(String[] args) { 3. float f1 = 2.3f; 4. float[][] f2 = {{42.Of}, {l.7f, 2.3f}, {2.6f, 2.7f}}; 5. float[] f3 = {2.7f}; 6. Long x = 42L; 7. // insert code here 8. System.out.println("true"); 9. } 10. } And the following five code fragments: F1. if (f1 == f2) F2. if (f1 == f2[2][1]) F3. if (x == f2[0][0]) F4. if (f1 == f2 [1,1]) F5. if (f3 == f2 [2]) What is true?

Given: public class Foo { Foo() {System.out.print("foo");} class Bar{ Bar() {System.out.print("bar");} public void go() {System.out.print("hi");} } public static void main(String[] args) { Foo f = new Foo (); f.makeBar(); } void makeBar() { (new Bar() {}).go(); } } What is the result?

package loop; public class TestLoop5 { public static void main(String[] args) { for(;;) { System.out.println("I am in for loop"); } } }