LazaroIbanez

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com</groupId>
    <artifactId>restapi</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>restapi</name>

LazaroIbanez

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class StartApplication {
	
	public static void main(String[] args) {
        	SpringApplication.run(StartApplication.class, args);
    	}

LazaroIbanez

public class G extends G1 {
  
  int x = 100;
  
  public void display() {
    System.out.println(“Subclass x value: “ + x); // prints 100
    System.out.println(“Super class x value: “ + super.x); // prints 10
    System.out.println(“Sum of x values: “ + (x + super.x)); // prints 110
    super.display(); // calling super class (G1) display()
    System.out.println(“From subclass”);

LazaroIbanez

public class F implements InterfaceB {
  public void m1() {
    //super.m1();//This is NOT valid.
    //InterfaceA.super.hello(); //This is NOT valid because F does not implement InterfaceA.
    InterfaceB.super.m1(); //This is valid.
  }
}

interface InterfaceA {
  default void m1() {}

LazaroIbanez

public class H extends H1 {
  
  public H() {
    super(50);
    System.out.println(“From H constructor”);
  }
  
  public static void main(String args[]) {
    H objectH = new H();
  }

LazaroIbanez

class C implements I1, I2 {
  public void m1() {}
  public static void main(String… args) {
    C tc = new C();
    System.out.println(( ( I1) tc).VALUE);
  }
}

interface I1 {
  int VALUE = 1;

LazaroIbanez

public class D implements Interface2 {
  
  public static void main (String… args) {
    Interface1 acct = new D();
    System.out.println(acct.getId());
  }
  
  public String getId() {
    return “1111”;
  }

LazaroIbanez

public class D implements Interface1, Interface2 {
  public String getId() {
    return “1111”;
  }
}

interface Interface1 {
  public default String getId() {
    return “0000”;
  }

LazaroIbanez

public class E implements Interf1 {
  
  public String getId() {
    return “E: get Id”;
  }
  
  public String getOtherId() {
    return “E: get Other Id”;
  }
  

LazaroIbanez

public class A {
  
  static { System.out.println(“A Loaded”); }
  
  public static void main(String[] args) {
    System.out.println(“A should have been loaded”);
    A1 a1 = null;
    System.out.println(“A1 should not have been loaded”);
    System.out.println(a1.i);
  }