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Smart Grids and Energy Storage Systems

Smart Grids and Energy Storage Systems: Powering the Future of Energy In today’s rapidly evolving energy landscape, traditional power grids are being replaced by more intelligent, efficient, and sustainable systems. Smart grids combined with energy storage systems (ESS) are transforming how electricity is generated, distributed, and consumed — paving the way for a cleaner, more reliable energy future. What is a Smart Grid? A smart grid is an advanced electricity network that uses digital communication, sensors, and automation to monitor and manage the flow of electricity. Unlike traditional grids, smart grids can: Detect and respond to changes in electricity demand in real-time. Integrate renewable energy like solar, wind, and hydro. Improve efficiency by reducing energy losses. Key technologies in smart grids include: Smart meters for accurate energy usage tracking. Automated control systems to manage power distribution. Data analytics for predictive maintenance and demand forecasting...

Main method in Java

What is main method in Java?
          Main method in Java is an standard method which is used by JVM to start execution of any java program. Main method is referred as entry point of any standalone java application.
          Main method in Java is public so that it's visible to every other class, even which are not part of it's package. If it is not public, JVM class might not able to access it.
          Main method is static so that java runtime can access it without initializing the class. While JVM tried to execute java program, it doesn't know how to create instance of main class as there is no standard constructor is defined for main class.
          Main method is void in Java because it doesn't return anything to caller which is JVM.

Signature of main method:
          main method is public, static and void and accept an array of String as argument through which we can pass runtime arguments to the java program. From java5 onwards it can also accept variable arguments instead of array. Following signature are valid main method signature in java :
public static void main(String args[]) {}
public static void main (String [] args) {}
public static void main (String.... args) {}
          You can also use certain modifier like final, synchronized and strictfp along with main method in java.
          If you change the signature of main method, JVM will not able to locate main method and will throw exception at runtime as:
'java.lang.NoSuchMethodError:main'
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