Similarity and difference between static block and static method ?

992

---

Difference between class#getinstance() and new operator ?

1291

---

What is a lambda expression ? What's its use ?

1170

---

Describe what happens when an object is created in java ?

1084

---

Difference between == and .equals() ?

1047

---

What are default methods ?

1117

---

Does constructor creates the object ?

1092

---

What are the difference between composition and inheritance in java?

1103

---

How is abstraction implemented in java ?

1102

---

How can we disable a constraint ?

1091

---

Does sql allow null values ? Can we use it within where clause ?

1043

---

Write an sql to find all records having all numeric characters in a field ?

1044

---

Explain the difference between inner and outer join ?

1117

---

What are temp tables ?

1032

---

What is database deadlock ?

1306

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