Java Constructor Overload - Click 4 Kaw Hmu

We will learn constructor overload in java.

public class ConstOverLoad {

	public static void main(String[] args) {
		
		Hello hello;
		
		hello = new Hello(5);
		
		hello.greet();
	}
}


class Hello {

	int count;

	//Constructor Overloading

	Hello() {
		this.count = 1;
	}

	//Constructor
	//Must sameWith className
	//No return type Eg: void
	//Constructor type can't be same with other Const

	Hello(int count) {

		if(count > 0) {
			this.count = count;
		}
	}

	void greet() {
		for( int i = 0; i < 5; i++) {
			System.out.println("Hello Java Method");
		}
		
	}

	//Init block can initialize
	//14 Writing Constructor.mp4
}

Code Block in Java.

import java.util.Properties;
import java.io.FileInputStream;

public class CodeBlock {

	public static void main(String[] args) {
		Hello hello = new Hello();
		hello.show();
	}
}

class Hello {

	//Initializing
	//Under class, only write declaration
	//Instance Variable

	String name;
	int count;

	//CodeBlock for initialization instance variable
	
	{	
		try(FileInputStream input = new FileInputStream("settings.properties")) {
			
			Properties prop = new Properties();
			prop.load(input);

			name = prop.getProperty("name");
			count = Integer.valueOf(prop.getProperty("count"));
		} catch(Exception e) {
			e.printStackTrace();
		}
	}

	void show() {
		for (int i = 0; i < count; i++) {
			System.out.println(name);
		}
	}
}