Java Tutorial

Rumman Ansari   Software Engineer   2023-01-27   42651 Share

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What is programming?

The term programming means to create (or develop) software, which is also called a program. Computer programs, known as software, are instructions that tell a computer what to do.

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What is Java?

Java is an object oriented, simple, distributed, interpreted, robust, architecture neutral, portable, high performance, multithreaded, dynamic, powerful and versatile programming language originally developed by Sun Microsystems and released in 1995 for developing software running on the mobile device, desktop computer, and server.

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About This Tutorial

This tutorial has been prepared for the beginners to help them understand the basic to advanced concepts of Java Programming language.

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Prerequisites for This Tutorial

Java is related to C++, which is a direct descendant of C. Much of the character of Java is inherited from these two languages. From C, Java derives its syntax. Many of Java's object-oriented features were influenced by C++. In fact, several of Java's defining characteristics come from its predecessors (c and c++).

So our suggestion is that, to learn C OR C++ first then come back. if you will have the concepts any one of the language it will help you to understand the java quickly.

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Is It Necessary to Learn C, C++ Before Java?

Well, the answer is a definite no. You do not need to learn C, C++ before Java. In fact, you can learn Java without any C, C++ knowledge at all. The two languages follow slightly different paradigms, have a different syntax and are used in different types of software development.

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Target Audience

• Students who are pursuing BCA, MCA, B.E/B.Tech (CS/IT/EC/EE/ME/Civil/Any other discipline)
• Students who have "Java Programming" in their curriculum
• Candidates who wish to switch from service based companies to product based
• Candidates who want to continue their career as JAVA developer
• Candidates who are passionate about coding

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Important Links

• Java -Program Chapter Wise
  
• Java - Interview Questions & Answers
  
• Java - MCQ Questions & Answers
  

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Next › -   Object-Oriented Paradigm

Related Assignment

• Assignment 1: Comments in Java
• Assignment 2: Single Line Comment in java
• Assignment 3: Multi Line Comment in java
• Assignment 4: Documentation Comment in java
• Assignment 5: isLowerCase() in java
• Assignment 6: C Program to Count the Number of Vowels, Consonants and so on
• Assignment 7: compareTo() Method in java
• Assignment 8: Runtime Polymorphism ( method overriding ) with Multilevel Inheritance
• Assignment 9: How to iterate over a string in C?
• Assignment 10: How to iterate over a string in C?



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Related Questions

• Question 1: What is computer?
• Question 2: List five major hardware components of a computer.
• Question 3: What do you mean by synchronized Non Access Modifier?
• Question 4: According to Java Operator precedence, which operator is considered to be with highest precedence?
• Question 5: Define composition?
• Question 6: What is Method/function overloading?
• Question 7: What is Method/function overriding?
• Question 8: Difference between Overloading and Overriding?
• Question 9: What is final class?
• Question 10: What is NullPointerException?
• Question 11: What are the ways in which a thread can enter the waiting state?
• Question 12: How does multi-threading take place on a computer with a single CPU?
• Question 13: What invokes a thread's run() method?
• Question 14: Does it matter in what order catch statements for FileNotFoundException and IOException are written?
• Question 15: What is the difference between yielding and sleeping?
• Question 16: Why Vector class is used?
• Question 17: How many bits are used to represent Unicode, ASCII, UTF-16, and UTF-8 characters?
• Question 18: What are Wrapper classes?
• Question 19: What is the difference between a Window and a Frame?
• Question 20: Which package has light weight components?
• Question 21: What is the difference between the paint() and repaint() methods?
• Question 22: What is the purpose of File class?
• Question 23: What is the difference between the Reader/Writer class hierarchy and the InputStream/OutputStream class hierarchy?
• Question 24: Which class should you use to obtain design information about an object?
• Question 25: What is the difference between static and non-static variables?
• Question 26: What is Serialization and deserialization?
• Question 27: What are use cases?
• Question 28: Explain the use of sublass in a Java program?
• Question 29: How to add menushortcut to menu item?
• Question 30: Can you write a Java class that could be used both as an applet as well as an application?
• Question 31: What is the difference between Swing and AWT components?
• Question 32: What's the difference between constructors and other methods?
• Question 33: Is there any limitation of using Inheritance?
• Question 34: When is the ArrayStoreException thrown?
• Question 35: Can you call one constructor from another if a class has multiple constructors?
• Question 36: What's the difference between the methods sleep() and wait()?
• Question 37: When ArithmeticException is thrown?
• Question 38: What is a transient variable?
• Question 39: What is synchronization?
• Question 40: What is the Collections API?
• Question 41: Does garbage collection guarantee that a program will not run out of memory?
• Question 42: The immediate super class of the Applet class?
• Question 43: Which Java operator is right associative?
• Question 44: What is the difference between a break statement and a continue statement?
• Question 45: If a variable is declared as private, where may the variable be accessed?
• Question 46: What is the purpose of the System class?
• Question 47: List primitive Java types?
• Question 48: What is the relationship between clipping and repainting under AWT?
• Question 49: Which class is the immediate superclass of the Container class?
• Question 50: What class of exceptions are generated by the Java run-time system?
• Question 51: Under what conditions is an object's finalize() method invoked by the garbage collector?
• Question 52: How can a dead thread be restarted?
• Question 53: Which arithmetic operations can result in the throwing of an ArithmeticException?
• Question 54: Variable of the boolean type is automatically initialized as?
• Question 55: Can try statements be nested?
• Question 56: What are ClassLoaders?
• Question 57: What is the difference between an Interface and an Abstract class?
• Question 58: What will happen if static modifier is removed from the signature of the main method?
• Question 59: What is the default value of an object reference declared as an instance variable?
• Question 60: Can a top level class be private or protected?
• Question 61: Why do we need wrapper classes?
• Question 62: What is the difference between error and an exception?
• Question 63: Is it necessary that each try block must be followed by a catch block?
• Question 64: When a thread is created and started, what is its initial state?
• Question 65: What is the Locale class?
• Question 66: What are synchronized methods and synchronized statements?
• Question 67: What is runtime polymorphism or dynamic method dispatch?
• Question 68: What is Dynamic Binding(late binding)?
• Question 69: Can constructor be inherited?
• Question 70: What are the advantages of ArrayList over arrays?
• Question 71: Why deletion in LinkedList is fast than ArrayList?
• Question 72: How do you decide when to use ArrayList and LinkedList?
• Question 73: What is a Values Collection View ?
• Question 74: What is dot operator?
• Question 75: Where and how can you use a private constructor?
• Question 76: What is type casting?
• Question 77: Describe life cycle of thread?
• Question 78: What is the difference between the >> and >>> operators?
• Question 79: Which method of the Component class is used to set the position and size of a component?
• Question 80: What is the range of the short type?
• Question 81: What is the immediate super class of Menu?
• Question 82: Does Java allow Default Arguments?
• Question 83: Which number is denoted by leading zero in java?
• Question 84: Which number is denoted by leading 0x or 0X in java?
• Question 85: Break statement can be used as labels in Java?
• Question 86: Where import statement is used in a Java program?
• Question 87: Explain suspend() method under Thread class.
• Question 88: Explain isAlive() method under Thread class?
• Question 89: What is currentThread()?
• Question 90: Explain main thread under Thread class execution?
• Question 91: Life cycle of an applet includes which steps?
• Question 92: Why is the role of init() method under applets?
• Question 93: Which method is called by Applet class to load an image?
• Question 94: Define code as an attribute of Applet?
• Question 95: Define canvas?
• Question 96: Define Network Programming?
• Question 97: What is a Socket?
• Question 98: Advantages of Java Sockets?
• Question 99: Disadvantages of Java Sockets?
• Question 100: Which class is used by server applications to obtain a port and listen for client requests?
• Question 101: Which class represents the socket that both the client and server use to communicate with each other?
• Question 102: Why Generics are used in Java?
• Question 103: What environment variables do I need to set on my machine in order to be able to run Java programs?
• Question 104: Is there any need to import java.lang package?
• Question 105: What is Nested top-level class?
• Question 106: What is Externalizable interface?
• Question 107: If System.exit (0); is written at the end of the try block, will the finally block still execute?
• Question 108: What is daemon thread?
• Question 109: Which method is used to create the daemon thread?
• Question 110: Which method must be implemented by all threads?
• Question 111: What is the GregorianCalendar class?
• Question 112: What is the SimpleTimeZone class?
• Question 113: What is the difference between the size and capacity of a Vector?
• Question 114: Can a vector contain heterogenous objects?
• Question 115: What is an enumeration?
• Question 116: What is difference between Path and Classpath?
• Question 117: Can a class declared as private be accessed outside it's package?
• Question 118: What are the restriction imposed on a static method or a static block of code?
• Question 119: Can an Interface extend another Interface?
• Question 120: Which object oriented Concept is achieved by using overloading and overriding?
• Question 121: What is an object's lock and which object's have locks?
• Question 122: What is Downcasting?
• Question 123: What are order of precedence and associativity and how are they used?
• Question 124: If a method is declared as protected, where may the method be accessed?
• Question 125: What is the difference between inner class and nested class?
• Question 126: What restrictions are placed on method overriding?
• Question 127: What is constructor chaining and how is it achieved in Java?
• Question 128: Can a double value be cast to a byte?
• Question 129: How does a try statement determine which catch clause should be used to handle an exception?
• Question 130: What will be the default values of all the elements of an array defined as an instance variable?
• Question 131: What is the numerical range of a char data type in Java?
• Question 132: What is a preprocessor?
• Question 133: What does static variable mean?
• Question 134: What is a pointer?
• Question 135: What are the uses of a pointer?
• Question 136: What is a structure?
• Question 137: What is a union?
• Question 138: What are the differences between structures and arrays?
• Question 139: In header files whether functions are declared or defined?
• Question 140: What is a static identifier?
• Question 141: What are the differences between malloc () and calloc ()?
• Question 142: Difference between pass by reference and pass by value?
• Question 143: Where is the auto variables stored?
• Question 144: Where does global, static, and local, register variables, free memory and C Program instructions get stored?
• Question 145: Difference between arrays and linked list?
• Question 146: What are enumerations?
• Question 147: Describe about storage allocation and scope of global, extern, static, local and register variables?
• Question 148: What are register variables? What are the advantages of using register variables?
• Question 149: What is the use of typedef?
• Question 150: Can we specify variable field width in a scanf() format string? If possible how?
• Question 151: Out of fgets() and gets() which function is safe to use and why?
• Question 152: Difference between strdup and strcpy?
• Question 153: What is recursion?
• Question 154: Differentiate between for loop and a while loop? What are its uses?
• Question 155: What is storage class? What are the different storage classes in C?
• Question 156: What the advantages of using Unions?
• Question 157: What is the difference between Strings and Arrays?
• Question 158: What is a far pointer? Where we use it?
• Question 159: What is a huge pointer?
• Question 160: What is a normalized pointer, how do we normalize a pointer?
• Question 161: What could possibly be the problem if a valid function name such as tolower() is being reported by the C compiler as undefined?
• Question 162: What are the different types of control structures in programming?
• Question 163: How will you print "Hello World" without semicolon in c programming Language using #define?
• Question 164: What is Macro? Why do we use the macro?
• Question 165: When was C language developed?

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