View difference between Paste ID: wU1cau4Y and D8T9vAba

 package com.example.foo;
 
 import java.time.Month;
 import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
 import java.util.Random;
 import java.util.stream.Collectors;
 
 import com.example.foo.SomeClass.Foo.Type;
 
 public class SomeClass {
   public static void main(final String[] args) {
-      foos.add(new Foo(Month.of(rng.nextInt(12) + 1).name(), rng.nextInt(3) + 1));
+
     final Random rng = new Random();
-    final List<Foo> elements = foos.blub();
+    final Type[] types = Foo.Type.values();
     // This just adds random elements:
     for (int i = 0; i < 100; i++)
       foos.add(new Foo(Month.of(rng.nextInt(12) + 1).name(), types[rng.nextInt(types.length)]));
 
     final List<Foo> elements = foos.sortedByType();
     for (final Foo foo : elements)
       System.out.println(foo.getName());
   }
 
   public static class FooContainer {
     private final List<Foo> list = new ArrayList<>();
-    public List<Foo> blub() {
+
-      final List<Foo> result = new ArrayList<>();
+
-      for (int i = Foo.TYPE_A; i <= Foo.TYPE_C; i++)
+
-        for (final Foo f : this.list)
+
-          if (i == f.getType())
+
-            result.add(f);
+    public List<Foo> sortedByType() {
-      return result;
+      return this.list.stream().sorted(Comparator.comparing(Foo::getType))
           .collect(Collectors.toList());
     }
   }
 
-    public static final int TYPE_A = 1;
+
-    public static final int TYPE_B = 2;
+    public static enum Type {
-    public static final int TYPE_C = 3;
+      A, B, C;
     }
-    private int type;
+
     private Type type;
     private String name;
-    public Foo(final String name, final int type) {
+
     public Foo(final String name, final Type type) {
       this.name = name;
       this.type = type;
     }
 
     public String getName() {
       return this.name;
     }
 
     public void setName(final String name) {
       this.name = name;
     }
-    public int getType() {
+
     public Type getType() {
       return this.type;
     }
-    public void setType(final int type) {
+
     public void setType(final Type type) {
       this.type = type;
     }
   }
 }