Java Programming
June 11, 2025 at 01:29 PM
💻 *Top 10 Java Concepts with Examples* ☕🚀
1️⃣ *Variables and Data Types*
```java
int age = 25;
String name = "John";
```
2️⃣ *Methods (Functions)*
```java
public static String greet(String name) {
return "Hello " + name;
}
```
3️⃣ *Arrays*
```java
int[] numbers = {1, 2, 3, 4};
System.out.println(numbers[0]); // 1
```
4️⃣ *Objects and Classes*
```java
class Person {
String name;
int age;
}
```
5️⃣ *Loops (for, while, for-each)*
```java
for(int i = 0; i < 5; i++) {
System.out.println(i);
}
```
6️⃣ *Conditionals (if, else, switch)*
```java
if(age > 18) {
System.out.println("Adult");
} else {
System.out.println("Minor");
}
```
7️⃣ *Inheritance*
```java
class Animal {
void speak() { System.out.println("Sound"); }
}
class Dog extends Animal {
void speak() { System.out.println("Bark"); }
}
```
8️⃣ *Interfaces*
```java
interface Drawable {
void draw();
}
class Circle implements Drawable {
public void draw() { System.out.println("Drawing circle"); }
}
```
9️⃣ *Exception Handling*
```java
try {
int result = 10 / 0;
} catch (ArithmeticException e) {
System.out.println("Cannot divide by zero");
}
```
🔟 *Collections (ArrayList, HashMap)*
```java
ArrayList list = new ArrayList<>();
list.add("Java");
HashMap map = new HashMap<>();
map.put("Age", 30);
```
🔥 *React ❤️ for more Java concepts!*
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