example of runnable interface in java

Example 1: how to implement a interface in java

interface methods{
 public static hey(); 
}

class scratch implements methods{
  // Required to implement all methods declared in an interface 
  // Or else the class becomes abstract
  public static hey(){
   System.out.println("Hey"); 
  }
}

Example 2: how to create an abstract method in java

abstract class Scratch{
  // cannot be static
    abstract public void hello();
    abstract String randNum();
}

interface Other{
  //all methods in an interface are abstract
    public void bye();
    String randDouble();
}