[JAVA-621] core-java-lang-oop-modifiers module

* Creation

* Moved code from https://www.baeldung.com/java-static

* Moved code from https://www.baeldung.com/java-final

* Moved code from https://www.baeldung.com/java-public-keyword

* Moved code from https://www.baeldung.com/java-access-modifiers

* Moved code from https://www.baeldung.com/java-private-keyword

* Moved code from https://www.baeldung.com/java-static-default-methods

* Moved code from https://www.baeldung.com/java-strictfp

* Moved article references to the new README.md

core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/core/privatemodifier/Employee.java

@@ -1,59 +0,0 @@
-package com.baeldung.core.privatemodifier;
-
-public class Employee {
-
-    private String privateId;
-    private String name;
-    private boolean manager;
-
-    public Employee(String id, String name) {
-        setPrivateId(id);
-        setName(name);
-    }
-
-    private Employee(String id, String name, boolean managerAttribute) {
-        this.privateId = id;
-        this.name = name;
-        this.privateId = id + "_ID-MANAGER";
-    }
-
-    public void setPrivateId(String customId) {
-        if (customId.endsWith("_ID")) {
-            this.privateId = customId;
-        } else {
-            this.privateId = customId + "_ID";
-        }
-    }
-
-    public String getPrivateId() {
-        return privateId;
-    }
-
-    public boolean isManager() {
-        return manager;
-    }
-
-    public void elevateToManager() {
-        if ("Carl".equals(this.name)) {
-            setManager(true);
-        }
-    }
-
-    private void setManager(boolean manager) {
-        this.manager = manager;
-    }
-
-    
-    public String getName() {
-        return name;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
-    
-    public static Employee buildManager(String id, String name) {
-        return new Employee(id, name, true);
-    }
-    
-}

core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/core/privatemodifier/ExampleClass.java

@@ -1,10 +0,0 @@
-package com.baeldung.core.privatemodifier;
-
-public class ExampleClass {
-
-    public static void main(String[] args) {
-        Employee employee = new Employee("Bob","ABC123");
-        employee.setPrivateId("BCD234");
-        System.out.println(employee.getPrivateId());
-    }
-}

core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/core/privatemodifier/PublicOuterClass.java

@@ -1,16 +0,0 @@
-package com.baeldung.core.privatemodifier;
-
-public class PublicOuterClass {
-
-    public PrivateInnerClass getInnerClassInstance() {
-        PrivateInnerClass myPrivateClassInstance = this.new PrivateInnerClass();
-        myPrivateClassInstance.id = "ID1";
-        myPrivateClassInstance.name = "Bob";
-        return myPrivateClassInstance;
-    }
-
-    private class PrivateInnerClass {
-        public String name;
-        public String id;
-    }
-}

core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/strictfpUsage/Circle.java

@@ -1,5 +0,0 @@
-package com.baeldung.strictfpUsage;
-
-public strictfp interface Circle {
-    double computeArea(double radius);
-}

core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/strictfpUsage/ScientificCalculator.java

@@ -1,12 +0,0 @@
-package com.baeldung.strictfpUsage;
-
-public strictfp class ScientificCalculator {
-
-    public double sum(double value1, double value2) {
-        return value1 + value2;
-    }
-
-    public double diff(double value1, double value2) {
-        return value1 - value2;
-    }
-}

core-java-modules/core-java-lang-oop-4/src/test/java/com/baeldung/strictfpUsage/ScientificCalculatorUnitTest.java

@@ -1,18 +0,0 @@
-package com.baeldung.strictfpUsage;
-
-import org.junit.Test;
-
-import static org.hamcrest.Matchers.is;
-import static org.junit.Assert.assertThat;
-
-public class ScientificCalculatorUnitTest {
-
-    @Test
-    public void whenMethodOfstrictfpClassInvoked_thenIdenticalResultOnAllPlatforms() {
-        ScientificCalculator calculator = new ScientificCalculator();
-        double result = calculator.sum(23e10, 98e17);
-        assertThat(result, is(9.800000230000001E18));
-        result = calculator.diff(Double.MAX_VALUE, 1.56);
-        assertThat(result, is(1.7976931348623157E308));
-    }
-}