Introduction to Java
Java is a popular, high-level, object-oriented programming language developed by Sun Microsystems (now owned by Oracle). It is widely used in enterprise applications, Android development, and server-side software.
- Platform independent: Write once, run anywhere
- Object-oriented and secure
- Used in web apps, mobile apps, desktop software, and games
1. Hello World
public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello, World!");
}
}
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2. Addition of Two Numbers
public class Addition {
public static void main(String[] args) {
int a = 5;
int b = 3;
int sum = a + b;
System.out.println("Sum = " + sum);
}
}
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3. Subtraction Example
public class Subtract {
public static void main(String[] args) {
int a = 10;
int b = 4;
System.out.println("Difference = " + (a - b));
}
}
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4. Loop (Print Numbers 1 to 5)
public class LoopDemo {
public static void main(String[] args) {
for (int i = 1; i <= 5; i++) {
System.out.println(i);
}
}
}
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5. Function to Multiply
public class Multiply {
public static int product(int x, int y) {
return x * y;
}
public static void main(String[] args) {
System.out.println("Product = " + product(4, 5));
}
}
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