java interface
public interface Exampleinterface {
public void menthod1();
public int method2();
}
class ExampleInterfaceImpl implements ExampleInterface {
public void method1()
{
//code here
}
public int method2()
{
//code here
}
}Java Extending Interfaces
// An interface can extend another interface in the same way that a class can extend another class. The extends keyword is used to extend an interface, and the child interface inherits the methods of the parent interface.
Example
// Filename: Sports.java
public interface Sports {
public void setHomeTeam(String name);
public void setVisitingTeam(String name);
}
// Filename: Football.java
public interface Football extends Sports {
public void homeTeamScored(int points);
public void visitingTeamScored(int points);
public void endOfQuarter(int quarter);
}
// Filename: Hockey.java
public interface Hockey extends Sports {
public void homeGoalScored();
public void visitingGoalScored();
public void endOfPeriod(int period);
public void overtimePeriod(int ot);
}
The Hockey interface has four methods, but it inherits two from Sports. Thus, a class that implements Hockey needs to implement all six methods. Similarly, a class that implements Football needs to define the three methods from Football and the two methods from Sports.interface extending interface in java
public interface Hockey extends Sports, EventCopyright © 2021 Codeinu
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