Tech Jargon - Decoded

Grading Game: Can you assign grades based on marks using if-else in Java?

public class GradeCalculator {
    public static void main(String[] args) {
        int marks = 75;
        char grade;

        if (marks >= 90) {
            grade = 'A';
        } else if (marks >= 80) {
            grade = 'B';
        } else if (marks >= 70) {
            grade = 'C';
        } else if (marks >= 60) {
            grade = 'D';
        } else {
            grade = 'F';
        }

        System.out.println("Marks: " + marks);
        System.out.println("Grade: " + grade);
    }
}

#JavaBasics #ControlFlow #SwitchCase

Math Made Easy: Build a Simple Calculator in Java!

import java.util.Scanner;

public class SimpleCalculator {
 public static void main(String[] args) {
 Scanner scanner = new Scanner(System.in);

 System.out.print("Enter first number: ");
 double num1 = scanner.nextDouble();

 System.out.print("Enter an operator (+, -, *, /): ");
 char operator = scanner.next().charAt(0);

 System.out.print("Enter second number: ");
 double num2 = scanner.nextDouble();

 double result;

 switch (operator) {
 case '+':
 result = num1 + num2;
 break;
 case '-':
 result = num1 - num2;
 break;
 case '*':
 result = num1 * num2;
 break;
 case '/':
 if (num2 == 0) {
 System.out.println("Error: Cannot divide by zero!");
 return;
 }
 result = num1 / num2;
 break;
 default:
 System.out.println("Error: Invalid operator!");
 return;
 }

 System.out.println("Result: " + result);

 scanner.close();
 }
}

#JavaBasics #ControlFlow #ConditionalLogic

Unlocking the Power of 'if-else': Can you find the biggest number?

public class MaxOfThree {
 public static void main(String[] args) {
  int num1 = 10;
  int num2 = 5;
  int num3 = 15;
  int max;

  if (num1 >= num2 && num1 >= num3) {
  max = num1;
  } else if (num2 >= num1 && num2 >= num3) {
  max = num2;
  } else {
  max = num3;
  }

  System.out.println("The maximum number is: " + max);
 }
}

#JavaBasics #ControlFlow #ConditionalLogic

Is it positive, negative, or zero? 🤔 A Java number check!

public class NumberCheck {
    public static void main(String[] args) {
        int number = 10;

        if (number > 0) {
            System.out.println("Positive");
        } else if (number < 0) {
            System.out.println("Negative");
        } else {
            System.out.println("Zero");
        }
    }
}

#JavaBasics #TernaryOperator #ConditionalLogic

Is it hot or cold? 🤔 Using the ternary operator to decide!

public class TernaryExample {
    public static void main(String[] args) {
        int temperature = 20;
        String weather = (temperature > 25) ? "Hot" : "Cold";
        System.out.println("The weather is: " + weather);
    }
}

#JavaBasics #Autoboxing #Unboxing

Wrapper Wonders: How to automatically convert between primitive types and objects in Java!

public class AutoboxingUnboxing {
    public static void main(String[] args) {
        Integer wrapperInt = 10; 
        int primitiveInt = wrapperInt; 

        Double wrapperDouble = 3.14;
        double primitiveDouble = wrapperDouble;

        System.out.println("Wrapper Integer: " + wrapperInt);
        System.out.println("Primitive Integer: " + primitiveInt);
        System.out.println("Wrapper Double: " + wrapperDouble);
        System.out.println("Primitive Double: " + primitiveDouble);

        int sum = wrapperInt + (int)wrapperDouble; 
        System.out.println("Sum: " + sum);
    }
}

#JavaBasics #DataTypes #StringParsing

Number Strings to Primitives: Unleash Java's Parsing Power! 🚀

public class StringToPrimitive {
    public static void main(String[] args) {
        String numStr = "123";
        int numInt = Integer.parseInt(numStr);
        System.out.println("Integer: " + numInt);

        String doubleStr = "3.14";
        double numDouble = Double.parseDouble(doubleStr);
        System.out.println("Double: " + numDouble);

        String booleanStr = "true";
        boolean boolValue = Boolean.parseBoolean(booleanStr);
        System.out.println("Boolean: " + boolValue);
    }
}

#JavaBasics #StringManipulation #Looping

Can you reverse a string in Java without using built-in reverse()?

public class ReverseString {
 public static void main(String[] args) {
 String str = "hello";
 String reversedStr = "";
 for (int i = str.length() - 1; i >= 0; i--) {
 reversedStr = reversedStr + str.charAt(i);
 }
 System.out.println(reversedStr);
 }
}

#JavaBasics #Operators #Conditions

Are you old enough and rich enough to buy that fancy car? Let's check with Java!

public class CarEligibility {
    public static void main(String[] args) {
        int age = 20;
        double income = 60000.0;
        boolean hasLicense = true;

        boolean isEligible = (age >= 18) && (income > 50000.0) && hasLicense;

        System.out.println("Is eligible to buy a car? " + isEligible);
    }
}

#JavaBasics #TypeCasting #DataTypes

Unlocking Java's Type Secrets: Widening and Narrowing Conversions!

public class TypeCasting {
    public static void main(String[] args) {
        int intValue = 100;
        double doubleValue = intValue;
        System.out.println("Implicit (Widening): int to double = " + doubleValue);

        double anotherDouble = 123.45;
        int anotherInt = (int) anotherDouble;
        System.out.println("Explicit (Narrowing): double to int = " + anotherInt);
    }
}

#JavaBasics #NumberSwap #MathTricks