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Quantum Computing – The Next Tech Revolution

Quantum Computing – The Next Tech Revolution Technology has evolved rapidly over the last few decades—from bulky mainframe computers to powerful smartphones in our pockets. Yet, despite these advances, traditional computers are approaching their physical limits. This is where quantum computing enters the scene, promising to revolutionize the way we process information and solve complex problems. What Is Quantum Computing? Quantum computing is a new paradigm of computing that uses the principles of quantum mechanics, a branch of physics that explains how matter and energy behave at the smallest scales. Unlike classical computers, which use bits that represent either 0 or 1, quantum computers use qubits. Qubits can exist in multiple states simultaneously, thanks to a property called superposition. Additionally, qubits can be interconnected through entanglement, allowing them to share information instantaneously. These unique properties give quantum computers immense computational power....

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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