Answer Posted / mayur gajera

'System' is a class in java.lang package
'out' is a static object of PrintStream class in java.io
package
'prinln()' is method in the PrintStream class

Is linkedlist thread safe in java?

565

---

How do you invoke a method?

545

---

How can you add and remove nodes in jtree?

619

---

Why do we need wrapper classes?

580

---

How does hashmap work in java ?

545

---

---

How do you stop a thread in java?

600

---

explain local datetime api in java8?

562

---

Which sorting is best in java?

543

---

Explain hashset and its features?

586

---

What two classes are used to read data only?

645

---

What is a numeric literal?

534

---

Can an interface extend a class?

547

---

Is java map thread safe?

495

---

Explain purpose of sleep() method in java?

624

---

What is the difference between and ?

518

---