Lambda Thread Creation Example
In JDK 8 introduced Lambda expression to address bulkiness of multiple lines of codes into single lines to solve vertical problem of inner class. Lambda expression consists of three parts:
| Argument List | Arrow token | Body |
| (int y, int z) | -> | y+z |
Below I will show you how to write Runnable using Lambda:
- LambdaAnonymousThreadCreation.java:
public class LambdaAnonymousThreadCreation {
public static void main(String[] args) {
System.out.println("Main thread name: " +Thread.currentThread().getName());
//Anonymous class thread creation
Runnable runnable = new Runnable() {
@Override
public void run() {
System.out.println(Thread.currentThread().getName()+" Old way running");
}
};
Thread thread = new Thread(runnable);
thread.start();
//Replaced by Lambda
Runnable runnable2 = ()-> {System.out.println(Thread.currentThread().getName()+" Lambda migration thread running");};
thread = new Thread(runnable2);
thread.start();
oldWayThreadCreation();
lambdaThreadCreation();
}
public static void oldWayThreadCreation() {
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
System.out.println("Old way of thread creation");
System.out.println(Thread.currentThread().getName()+" Old way running");
}
});
thread.start();
}
public static void lambdaThreadCreation() {
Thread thread = new Thread(()->{
System.out.println("Lambda migration of thread creation");
System.out.println(Thread.currentThread().getName()+" Lambda migration thread running");
});
thread.start();
}
}
- Output:
- For more information please visit Oracle documentation here
