Java多线程并发中资源竞争问题实例-蒲公英云

Java多线程并发中资源竞争问题实例

原创系统管理员 2024-11-22 07:24 81阅读 0赞

在Java多线程并发编程中，资源竞争问题是一个常见的例子。这里以一个简单的银行账户转账系统为例：

账户类 (Account.java)
```java
import java.util.Random;

public class Account {
private double balance;
private final Random rand = new Random();

public Account(double initialBalance) {
    this.balance = initialBalance;
}
public void deposit(double amount) {
    balance += amount;
}
public void withdraw(double amount) {
    if (amount > balance)
        throw new IllegalArgumentException("Insufficient funds.");
    balance -= amount;
}
// Generating random transactions
public void transfer(Account toAccount, double amount) {
    // Transaction validation
    if (amount <= 0 || toAccount == null)
        return;
    // Calculate source account's change after transaction
    double sourceChange = withdraw(amount);
    // Update destination account balance and print result
    toAccount.deposit(sourceChange);
    System.out.println("Transfer successful: " + amount);
}

}


2. **主程序** (Main.java)
```java
public class Main {
    public static void main(String[] args) {
        Account sourceAccount = new Account(100);
        Account destinationAccount = new Account(50);
        // Transfer 50 units from source to destination account
        sourceAccount.transfer(destinationAccount, 50));
        // Print remaining balance in each account
        System.out.println("Source Account Balance: " + sourceAccount.balance);
        System.out.println("Destination Account Balance: " + destinationAccount.balance);
    }
}