About generic classes, generic methods, and generic interfaces in java

Generic class:

public class FanXingLeiDemo {//This is a generic type, you can pass any parameters

private T obj;

public T getObj() {

return obj ;

}

public void setObj(T obj) {

this.obj = obj;

}

}

Implementation:

public class FanXingMain {

public static void main (String[] args) {

FanXingLeiDemo fxd = new FanXingLeiDemo();

fxd.setObj("hahaha");

System.out.println(fxd.getObj());

}

}

Generic method:

public class FanXingMethod {

public void show(T t)

{

System.out.println(t);

}

}

Implementation:

public class FangXingMethodMain {

public static void main(String[] args) {

FanXingMethod fxm = new FanXingMethod();

fxm.show(100);

fxm.show("shshh ");

fxm.show(true);

}

}

Generic interface:

public interface Inter {

public abstract void show(T t);

}

Implement interface:

public class InterImpl implements Inter {

@Override

public void show(T t) {

//TODO automatically generated method stub

System. out.println(t);

}

}

Instantiation:

public class InterMain {

public static void main(String[] args) {

Inter in = new InterImpl< ;String>();

in.show("hahah");

}

}

More about generic classes, generic methods, generics in java For interface-related articles, please pay attention to the PHP Chinese website!