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Java Data Types: Real-Life Example

Understanding how data types are used in real-world applications can enhance comprehension. Below is an example of a simple banking application using various data types.

1. Bank Account Example

public class BankAccount {
    public static void main(String[] args) {
        String accountHolder = "John Doe";
        int accountNumber = 123456789;
        double accountBalance = 1000.50;
        boolean isActive = true;
        char accountType = 'S'; // S for Savings, C for Checking

        System.out.println("Account Holder: " + accountHolder);
        System.out.println("Account Number: " + accountNumber);
        System.out.println("Account Balance: $" + accountBalance);
        System.out.println("Account Active: " + isActive);
        System.out.println("Account Type: " + accountType);
    }
}

Output:

Account Holder: John Doe
Account Number: 123456789
Account Balance: $1000.5
Account Active: true
Account Type: S

2. Explanation

In this example:

  • String is used for the account holder's name.
  • int is used for the account number.
  • double is used for the account balance.
  • boolean indicates if the account is active.
  • char denotes the account type.

Key Takeaways

  • Real-life applications use various data types to represent different kinds of data.
  • Choosing the appropriate data type is crucial for data accuracy and program efficiency.
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