Replace line 9 with function < Integer > tripler = x- > - { return (Integer) X * 3 ; }.

Replace line 12 with public static void printValue function < Integer > f, int num) {.

Replace line 12 with public static int printValue function < Integer, Integer > , f, T num {.

Replace line 12 with public static < T > void printValue (Function < T, T > f, T num ) {,

Replace line 9 with function < Integer > , Integer > = X - > { return (integer) x * 3; }.

Make foo and sets synchronized.

Make setB synchronized.

Make foo synchronized.

Class A is thread safe.

Make a synchronized.

All three readers are still open.

All three readers have been closed.

The compilation fails.

Only reader1 has been closed.

public abstract void methodB();

final void methodG(){System.out.println(“G”);}

private abstract void methodC();

public String methodD();

public int x;

final void methodE();

public void methodF(){System.out.println(“F”);}

Supplier

Predicate

Function

Consumer

Option A

Option B

Option C

Option D

6910 3

10126 3

3

6104 3

Keys: 4 Values: 4 Map: 0

Keys: 4 Values: 4 Map: 4

The compilation fails.

Keys: 0 Values: 0 Map:

Keys: 0 Values: 0 Map: 0

Consumer function = (String f) - > (System.out.println(f);};

Supplier function = () - > fruits.get (0);

Predicate function = a - > a.equals( " banana " );

Function function = x - > x.substring(0,2);

I am an object array

The compilation fails due to an error in line 1.

I am an array

I am an object