Merge pull request eugenp#6110 from jlarroque/master

thombergs · web-flow · commit d86f9ed0c8ae · 2019-01-28T21:16:46.000+01:00
BAEL-2472 code examples
diff --git a/core-java-lang/src/main/java/com/baeldung/scope/BracketScopeExample.java b/core-java-lang/src/main/java/com/baeldung/scope/BracketScopeExample.java
@@ -0,0 +1,14 @@
+package org.baeldung.variable.scope.examples;
+
+public class BracketScopeExample {
+
+    public void mathOperationExample() {
+        Integer sum = 0;
+        {
+            Integer number = 2;
+            sum = sum + number;
+        }
+        // compiler error, number cannot be solved as a variable
+        // number++;
+    }
+}
diff --git a/core-java-lang/src/main/java/com/baeldung/scope/ClassScopeExample.java b/core-java-lang/src/main/java/com/baeldung/scope/ClassScopeExample.java
@@ -0,0 +1,14 @@
+package org.baeldung.variable.scope.examples;
+
+public class ClassScopeExample {
+
+    Integer amount = 0;
+
+    public void exampleMethod() {
+        amount++;
+    }
+
+    public void anotherExampleMethod() {
+        Integer anotherAmount = amount + 4;
+    }
+}
diff --git a/core-java-lang/src/main/java/com/baeldung/scope/LoopScopeExample.java b/core-java-lang/src/main/java/com/baeldung/scope/LoopScopeExample.java
@@ -0,0 +1,18 @@
+package org.baeldung.variable.scope.examples;
+
+import java.util.Arrays;
+import java.util.List;
+
+public class LoopScopeExample {
+
+    List<String> listOfNames = Arrays.asList("Joe", "Susan", "Pattrick");
+
+    public void iterationOfNames() {
+        String allNames = "";
+        for (String name : listOfNames) {
+            allNames = allNames + " " + name;
+        }
+        // compiler error, name cannot be resolved to a variable
+        // String lastNameUsed = name;
+    }
+}
diff --git a/core-java-lang/src/main/java/com/baeldung/scope/MethodScopeExample.java b/core-java-lang/src/main/java/com/baeldung/scope/MethodScopeExample.java
@@ -0,0 +1,13 @@
+package org.baeldung.variable.scope.examples;
+
+public class MethodScopeExample {
+
+    public void methodA() {
+        Integer area = 2;
+    }
+
+    public void methodB() {
+        // compiler error, area cannot be resolved to a variable
+        // area = area + 2;
+    }
+}
diff --git a/core-java-lang/src/main/java/com/baeldung/scope/NestedScopesExample.java b/core-java-lang/src/main/java/com/baeldung/scope/NestedScopesExample.java
@@ -0,0 +1,12 @@
+package org.baeldung.variable.scope.examples;
+
+public class NestedScopesExample {
+
+    String title = "Baeldung";
+
+    public void printTitle() {
+        System.out.println(title);
+        String title = "John Doe";
+        System.out.println(title);
+    }
+}
