Added example to print toString with formatted form.

YogenRaii · YogenRaii · commit 808a1f0eff70 · 2017-11-16T13:50:34.000-08:00
diff --git a/src/main/java/com/eprogrammerz/examples/algorithm/general/StringSorter.java b/src/main/java/com/eprogrammerz/examples/algorithm/general/StringSorter.java
@@ -1,28 +1,12 @@
 package com.eprogrammerz.examples.algorithm.general;
 
-import java.util.Arrays;
-import java.util.Collections;
+import java.util.ArrayList;
 import java.util.List;
 
 public class StringSorter {
     public static void main(String[] args) {
-        //numbers in string form sorting won't work as expected
-        System.out.println("Working with String numbers: ");
-        List<String> strNums = Arrays.asList("1969948", "2435212", "25582376", "27829693", "33159479", "3472231", "3472260", "38328893");
-
-        System.out.println("Before sorting: " + strNums);
-
-        Collections.sort(strNums);
-
-        System.out.println("After sorting: " + strNums);
-
-        System.out.println("Working with numbers: ");
-        List<Integer> nums = Arrays.asList(1969948, 2435212, 25582376, 27829693, 33159479, 3472231, 3472260, 38328893);
-
-        System.out.println("Before sorting: " + nums);
-
-        Collections.sort(nums);
-
-        System.out.println("After sorting: " + nums);
+        List<Integer> myList = new ArrayList<>();
+        System.out.println(myList);
+        myList.add(3);
     }
 }
diff --git a/src/main/java/com/eprogrammerz/examples/general/toString/Model.java b/src/main/java/com/eprogrammerz/examples/general/toString/Model.java
@@ -0,0 +1,40 @@
+package com.eprogrammerz.examples.general.toString;
+
+import java.lang.reflect.AccessibleObject;
+import java.lang.reflect.Field;
+import java.lang.reflect.Modifier;
+
+public abstract class Model {
+    @Override
+    public String toString() {
+        StringBuilder result = new StringBuilder();
+        String newLine = System.getProperty("line.separator");
+
+        result.append(this.getClass().getName());
+        result.append(newLine);
+        result.append("Object {");
+        result.append(newLine);
+
+        Field[] fields = this.getClass().getDeclaredFields();
+
+        AccessibleObject.setAccessible(fields, true);
+
+        for (Field field : fields) {
+            if (!Modifier.isStatic(field.getModifiers())) {
+                result.append("    ");
+                try {
+                    result.append(field.getName());
+                    result.append(": ");
+                    result.append(field.get(this));
+                } catch (IllegalAccessException e) {
+                    e.printStackTrace();
+                }
+                result.append(newLine);
+            }
+        }
+
+        result.append("}");
+
+        return result.toString();
+    }
+}
diff --git a/src/main/java/com/eprogrammerz/examples/general/toString/ToStringExample.java b/src/main/java/com/eprogrammerz/examples/general/toString/ToStringExample.java
@@ -0,0 +1,8 @@
+package com.eprogrammerz.examples.general.toString;
+
+public class ToStringExample {
+    public static void main(String[] args) {
+        User user = new User("Yogen", "Rai", 120000L);
+        System.out.println(user);
+    }
+}
diff --git a/src/main/java/com/eprogrammerz/examples/general/toString/User.java b/src/main/java/com/eprogrammerz/examples/general/toString/User.java
@@ -0,0 +1,14 @@
+package com.eprogrammerz.examples.general.toString;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class User extends Model {
+    private String firstName;
+    private String lastName;
+    private long id;
+    private static Integer count;
+}
