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JAVA notes PDF Download - Handwritten Notes

Core Java

1- Core Java Notes Naresh Tech-      Download

2- Core Java Notes Satya Technology- Download

3- Core Java Notes Ratan Sir-        Download

AdvancedJava

1- JavaEE / J2EE Satya Tech. Notes- Download

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Deadlock in Java and Solution

Deadlock in Java and Solution

Please find below the program for Deadlock in Java.

class A { } class B { } public class HelloWorld { final static A a = new A(); final static B b = new B(); public static void main(String[] args) { // Thread 1 Runnable thrd1 = () -> { // Resource a synchronized (a) { try { Thread.sleep(100); } catch (InterruptedException ex) { } // Resource b synchronized (b) { System.out.println("Thread 1"); } } }; // Thread 2 Runnable thrd2 = () -> { // hold Resorce b by thread1 synchronized (b) { synchronized (a) { System.out.println("Thread 2"); } } }; // threads start new Thread(thrd1).start(); new Thread(thrd2).start(); // Solution : To Avoid Deadlock, replace sequence of resources } }

Solution: To Avoid Deadlock, replace the sequence of resources

Program Link

Java 8 - Interface and Class

Please check one of the features of Java 8 related to the Interface and Class 

Program : 

public class HelloWorld{ public static void main(String []args){ Child c = new Child(); c.show();// this will print "Class" } } interface I { default void show(){ System.out.println("Interface"); } default void showAgaing(){ // we define multimple default method under Interface System.out.println("Interface again"); } } class C { public void show(){ System.out.println("Class"); } } class Child extends C implements I{ // public void show(){ // System.out.println("Child"); // } }

Code Link