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1.
Given:
1. d is a valid, non-null Date object
2. df is a valid, non-null DateFormat object set to the current locale
What outputs the current locales country name and the appropriate version of d's date?
1. d is a valid, non-null Date object
2. df is a valid, non-null DateFormat object set to the current locale
What outputs the current locales country name and the appropriate version of d's date?
2.
Given:
21. class Money {
22. private String country = Canada;
23. public String getC() { return country; }
24. }
25. class Yen extends Money {
26. public String getC() { return super.country; }
27. }
28. public class Euro extends Money {
29. public String getC(int x) { return super.getC(); }
30. public static void main(String[] args) {
31. System.out.print(new Yen().getC() + + new Euro().getC());
32. }
33. }
What is the result?
21. class Money {
22. private String country = Canada;
23. public String getC() { return country; }
24. }
25. class Yen extends Money {
26. public String getC() { return super.country; }
27. }
28. public class Euro extends Money {
29. public String getC(int x) { return super.getC(); }
30. public static void main(String[] args) {
31. System.out.print(new Yen().getC() + + new Euro().getC());
32. }
33. }
What is the result?
3.
Given:
import java.util.Date;
import java.text.DateFormat;
DateFormat df;
Date date = new Date();
//insert code here Linea 23
String s = df.format(date);
Which code fragment, inserted at line 23, allows the code to compile?
import java.util.Date;
import java.text.DateFormat;
DateFormat df;
Date date = new Date();
//insert code here Linea 23
String s = df.format(date);
Which code fragment, inserted at line 23, allows the code to compile?
4.
Given:
1. public class BuildStuff {
2. public static void main(String[] args) {
3. Boolean test = new Boolean(true);
4. Integer x = 343;
5. Integer y = new BuildStuff().go(test, x);
6. System.out.println(y);
7. }
8. int go(Boolean b, int i) {
9. if(b) return (i/7);
10. return (i/49);
11. }
12.}
What is the result?
1. public class BuildStuff {
2. public static void main(String[] args) {
3. Boolean test = new Boolean(true);
4. Integer x = 343;
5. Integer y = new BuildStuff().go(test, x);
6. System.out.println(y);
7. }
8. int go(Boolean b, int i) {
9. if(b) return (i/7);
10. return (i/49);
11. }
12.}
What is the result?
5.
Given:
import java.io.*;
public class Forest implements Serializable {
private Tree tree = new Tree();
public static void main(String [] args) {
Forest f = new Forest();
try {
FileOutputStream fs = new FileOutputStream(Forest.ser);
ObjectOutputStream os = new ObjectOutputStream(fs);
os.writeObject(f); os.close();
} catch (Exception ex) { ex.printStackTrace(); }
}
}
class Tree { }
What is the result?
import java.io.*;
public class Forest implements Serializable {
private Tree tree = new Tree();
public static void main(String [] args) {
Forest f = new Forest();
try {
FileOutputStream fs = new FileOutputStream(Forest.ser);
ObjectOutputStream os = new ObjectOutputStream(fs);
os.writeObject(f); os.close();
} catch (Exception ex) { ex.printStackTrace(); }
}
}
class Tree { }
What is the result?
6.
Which capability exists only in java.io.FileWriter?
7.
Given:
1. import java.io.*;
2.
3.
4.
5.
6. public class Talk {
7. public static void main(String[] args) {
8. Console c = new Console();
9. String pw;
10. System.out.print(password: );
11. pw = c.readLine();
12. System.out.println(got + pw);
13. }
14.}
If the user types the password aiko when prompted, what is the result?
2.
3.
4.
5.
6. public class Talk {
7. public static void main(String[] args) {
8. Console c = new Console();
9. String pw;
10. System.out.print(password: );
11. pw = c.readLine();
12. System.out.println(got + pw);
13. }
14.}
If the user types the password aiko when prompted, what is the result?
8.
Given:
1. public class LineUp {
2. public static void main(String[] args) {
3. double d = 12.345;
4. // insert code here
5. }
6. }
Which code fragment, inserted at line 4, produces the output | 12.345|?
1. public class LineUp {
2. public static void main(String[] args) {
3. double d = 12.345;
4. // insert code here
5. }
6. }
Which code fragment, inserted at line 4, produces the output | 12.345|?
9.
Given:
11. String test = Test A. Test B. Test C.;
12. // insert code here
13. String[] result = test.split(regex);
Which regular expression, inserted at line 12, correctly splits test into Test A, Test B, and Test C?
11. String test = Test A. Test B. Test C.;
12. // insert code here
13. String[] result = test.split(regex);
Which regular expression, inserted at line 12, correctly splits test into Test A, Test B, and Test C?
10.
Given:
1. interface A { public void aMethod(); }
2. interface B { public void bMethod(); }
3. interface C extends A,B { public void cMethod(); }
4. class D implements B {
5. public void bMethod(){}
6. }
7. class E extends D implements C {
8. public void aMethod(){}
9. public void bMethod(){}
10.public void cMethod(){}
11.}
What is the result?
1. interface A { public void aMethod(); }
2. interface B { public void bMethod(); }
3. interface C extends A,B { public void cMethod(); }
4. class D implements B {
5. public void bMethod(){}
6. }
7. class E extends D implements C {
8. public void aMethod(){}
9. public void bMethod(){}
10.public void cMethod(){}
11.}
What is the result?