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The Python compiler is a very refined APP that provides direct functionality for Python beginners and can be used to verify small programs. The software supports directly from the file manager to open the code file, user-friendly viewing!!
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LESSON 12: Java Operator Precedence
> Operator precedence determines the order in which the operators in an expression are evaluated.
> the operator with the highest precedence is operated first.
> the multiplication is performed before subtraction
> Example: Operator precedence
class Precedence {
public static void main(String[] args) {
int a = 10, b = 5, c = 1, result;
result = a-++c-++b;
System.out.println(result);
}
}
‼️What will be the output of the above example❓
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LESSON 11: 📁File Class in java🗂
🔗The File class is an abstract representation of file and directory pathname. A pathname can be either absolute or relative.
📝Once you have File object in hand, then there is a list of helper methods which can be used to manipulate the files.
Eg: public String getName()
public String getParent()
public File getParentFile()
public String getPath()
public boolean isAbsolute() ... and etc.
import java.io.*;
public class LearnTcode {
public static void main(String[] args) {
try {
File file = new File("learnTocode.txt");
if (file.createNewFile()) {
System.out.println("Join our channel");
} else {
System.out.println("File already exists.");
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
//output is: ------------770
Repost from EvoNext
public class OperatorPrecedence {
public static void main(String[] args) {
int a = 7 * 3 + 24 / 3 - 5; int b = (7 * 3) + (24 / 3) - 5; System.out.print(a + ", " + b); } }
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Repost from EvoNext
Qs: In java , which key word is used to show inheritance in a class?
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Repost from EvoNext
Q; What is the output of the following code fragment?
int [ ] odd = {1, 3, 5, 7, 9, 11 };
System.out.println( odd[0] + " " + odd[3] ) ;
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Repost from EvoNext
#Q1, From the statements given below, select the choice which assigns a value to X ?
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LESSON 10:- INHERITANCE
⚜️Inheritance is one of the basic concept in object
orientation in which a new class is created by
absorbing an existing class’s members and
embellishing them with new or modified capabilities.
✅ The existing class is called the superclass, and the
new class is the subclass.
Syntax for inheritance
class SubClassName extends SuperClassName{};
Why And When To Use "Inheritance"?
- It is useful for code reusability: reuse attributes and methods of an existing class when you create a new class.
Let's explore by using sample code:-
class Vehicle {
protected String brand = "Ford"; // Vehicle attribute
public void honk() { // Vehicle method
System.out.println("Tuut, tuut!");
}
}
class Car extends Vehicle {
private String modelName = "Mustang"; // Car attribute
public static void main(String[] args) {
// Create a myCar object
Car myCar = new Car();
// Call the honk() method (from the Vehicle class) on the myCar object
myCar.honk();
// Display the value of the brand attribute (from the Vehicle class) and the value of the modelName from the Car class
System.out.println(myCar.brand + " " + myCar.modelName);
}
}
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Python for Non programmers
🎬video size:227.6MB
🎧🎤Language: English 🧑💻🧑💻
Telegram channel : 👷♀👷♂
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Java Compiler on Android💠
Start programming With your Mobile
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HAVE A NICE DAY🙌
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LESSON 9: POLYMORPHISM
The word polymorphism means having many forms. In simple words, we can define polymorphism as the ability of a message to be displayed in more than one form.
Types of polymorphism
In Java , polymorphism is mainly divided into two types:
i.Compile-time Polymorphism
💎This type of polymorphism is achieved by function overloading or operator overloading. But Java doesn’t support the Operator Overloading.
ii.Runtime Polymorphism
❤️🔥It is a process in which a function call to the overridden method is resolved at Runtime. This type of polymorphism is achieved by Method Overriding.
>💗 Java program to demostrate polymorphism
class Parent {
// Method of parent class
void Print()
{
// Print statement
System.out.println("parent class");
}
}
// Helper class
class subclass2 extends Parent {
// Method
void Print()
{
// Print statement
System.out.println("subclass2");
}
}
// Class 4
// Main class
class GFG {
// Main driver method
public static void main(String[] args)
{
// Creating object of class 1
Parent a;
// Now we will be calling print methods
// inside main() method
a = new subclass1();
a.Print();
}
}
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🌿🌿🌿factorial in c++🌿🌿🌿
#include <iostream>
using namespace std;
int main()
{
int i,fact=1,number;
cout<<"Enter any Number: ";
cin>>number;
for(i=1;i<=number;i+)
{
fact=fact*i;
}
cout<<"Factorial of " <<number<<" is: "<<fact<<endl;
return 0;
} 770
🌿🌿🌿🌿🌿🌿🌿🌿🌿🌿🌿
🙋🙋🙋exercise on loop 🙋🙋
🌿🌿🌿🌿🌿🌿🌿🌿🌿🌿🌿
⓵.Print the integer numbers from 1 to 10 using for loop.
⓶.write a program to check whether an integer number is
prime or not using for loop.
⓷.Print the real numbers from 1 to 2 by 0.2 increment using
while loop.
⓸.print the numbers from 1 to 10 using do-while loop
⓹.check whether an integer number is prime or not using
do-while loop.
❗❗ Write your answer in commet👇👇❗❗
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C++ LESSON 8:
✍🏻✍🏻......🌿🌿🌿......✍🏻✍🏻
Break and continue statement
➾there are two statements break; and continue;
➾it is desirable to
skip the execution of a loop for a certain test condition or terminate
it immediately without checking the condition.
🌿🌿⓵.break statement 🌿🌿
➾is used to break loop or switch statement
➾. It breaks
the current flow of the program at the given condition
➾In case of
inner loop, it breaks only inner loop.
➾break statement is almost always used inside the
body of conditional statement inside the loop.
🌿🌿⓶.Continue Statement 🌿🌿
➾to skip a certain test condition within a loop
➾ It continues the current flow of the program and skips the
remaining code at specified condition
➾ It is almost always used inside
a conditional statement.
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