How we can make entity class or method final in JPA ?

Which is true? (Choose all that apply) public class UpWork { public staic void main(String[] args) { UpWorkupw = new UpWork(); }}

Which type(s) cannot be used as generics?

Output of the given code? public class Test15 { public static void main(String[] args) { VO a = new VO(2); VO b = new VO(3); swapONE(a, b); print(a, b); swapTWO(a, b); print(a, b); } private static void print(VO a, VO b) { System.out.print(a.toString() + b.toString()); } public static void swapONE(VO a, VO b) { VO tmp = a; a = b; b = tmp; } public static void swapTWO(VO a, VO b) { int tmp = a.x; a.x = b.x; b.x = tmp; } } class VO { public int x; public VO(int x) { this.x = x; } public String toString() { return String.valueOf(x); } }

Which statement is true about the given code? public class Test78 { public static void main(String[] args) throws Exception { new JBean().setHeight(1).setWidth(2).setDepth(3).setDensity(9); } } class JBean { private int height, width, depth, density; public JBean setHeight (int h) { this.height = h; return this; } public JBean setWidth (int w) { this.width = w; return this; } public JBean setDepth (int d) { this.depth = d; return this; } public JBean setDensity (int d) { this.density = d; return this; } }

What is the value of 'd' after this line of code has been executed? double d=Math.round(2.5+Math.round());

Which will compile without any error?

Say we have java entity with date field. For example: @Entity class User{ private Date joinDate; public Date getJoinDate(){ return joinDate; } public void setJoinDate(Date joinDate){ this.joinDate = joinDate; } } What JPA annotation will help us specify date format that will be used in database?

Will the following code compile? public interface Repository{ void save(Object data); } public abstract class RepositoryImpl implements Repository{ }

Is it possible to get mapping information from parent class that entity extends?

What kinds of properties can a JavaBean have?