Program 5.1

SaketJNU · SaketJNU · commit 2ad0380446ff · 2025-05-28T14:28:24.000+05:30
diff --git a/ucer/4B4/5_1.java b/ucer/4B4/5_1.java
@@ -0,0 +1,50 @@
+class BankAccount {
+    private int balance = 1000;
+
+    // Synchronized method to avoid race condition
+    public synchronized void withdraw(int amount, String threadName) {
+        System.out.println(threadName + " is trying to withdraw $" + amount);
+
+        if (balance >= amount) {
+            System.out.println(threadName + " is about to withdraw...");
+            try {
+                Thread.sleep(100); // simulate time delay
+            } catch (InterruptedException e) {
+                System.out.println("Interrupted!");
+            }
+            balance -= amount;
+            System.out.println(threadName + " completed withdrawal. Remaining balance: $" + balance);
+        } else {
+            System.out.println("Not enough balance for " + threadName + " to withdraw $" + amount);
+        }
+    }
+}
+
+class WithdrawThread extends Thread {
+    private BankAccount account;
+    private int amount;
+
+    public WithdrawThread(BankAccount account, int amount, String name) {
+        super(name); // Set thread name
+        this.account = account;
+        this.amount = amount;
+    }
+
+    public void run() {
+        account.withdraw(amount, Thread.currentThread().getName());
+    }
+}
+
+class ThreadSyncDemo {
+    public static void main(String[] args) {
+        BankAccount account = new BankAccount();
+
+        // Two threads trying to withdraw money from the same account
+        WithdrawThread t1 = new WithdrawThread(account, 700, "Thread-1");
+        WithdrawThread t2 = new WithdrawThread(account, 500, "Thread-2");
+
+        t1.start();
+        t2.start();
+    }
+}
+
