Beginner Program – Parameterized Constructor (Java)
April 27, 2016
Categorised in: Java Codes
public class BankAccount{
//Data members are called as states of object
private int accNumber;
private String accName;
private int accBalance;
//Parameterized Constructor
public BankAccount(int accNumber, String accName, int accBalance){
this.accNumber = accNumber;
this.accName = accName;
this.accBalance = accBalance;
}
public void display(){
//In-built functions usually begin with capital letter (Note 'S' below)
// + is used for concatenation
System.out.println("The account number is: " + accNumber);
System.out.println("The account name is: " + accName);
System.out.println("The account balance is: " + accBalance);
}
//Member functions are called behaviours of object
//boolean is return type of the function below
public boolean deposit(int amount){
if(amount<99){
return false;
}
this.accBalance += amount;
return true;
}
public int withdraw(int amt){
//If you have more than one condition and
//those conditions are independent of other conditions
//use || (or)
if(amt>accBalance || amt<0){
return 1;
}
this.accBalance -= amt;
return 0;
}
//below defines the entry point of your program in java
public static void main(String [] args){
System.out.println("Hello Java\n");
/* Note:
* 1. Memory is allocated on heap.
* 2. b1 is a reference of type BankAccount
*/
BankAccount b1 = new BankAccount(101, "Pratik", 1000);
//Member functions can only be called through reference
b1.display();
}
}
Output:
Hello Java
The account number is: 101
The account name is: Pratik
The account balance is: 1000
Pratik Kataria is currently learning Springboot and Hibernate.
Technologies known and worked on: C/C++, Java, Python, JavaScript, HTML, CSS, WordPress, Angular, Ionic, MongoDB, SQL and Android.
Softwares known and worked on: Adobe Photoshop, Adobe Illustrator and Adobe After Effects.