When can an object reference be cast to an interface reference in java programming?

611

Draw a SLD for main panel for school having connected load of 1200kw and emergency generator 200kw.also show the increase of additional load of chiller 225kw in the lv panel indicating meter postion size of transformer ,cables and capacitor bank.

567

Why does my code get a security exception when I run it from a network shared drive?

519

Is null in java?

584

How do I delete a table in postgresql?

463

What is api used for?

503

is there is any opening in ongc if i have experience of telecom?

2330

To implement new application on IBM z/10. Which of the following options need to be considered if it to be implemented in Linux?

541

What are the effects of ageing or using second hand IC or other electronic components?

1535

How do I combine c and d drives in windows 10?

468

Is not seo just about meta-tags and submissions?

497

Do you want to change your career path in the future?

797

What happens if only one of the commands set screen and leave screen is used without using the other?

630

List some exit codes?

237

Explain triggers in sql?

583