diff --git a/practice/Greeting.class b/practice/Greeting.class
new file mode 100644
index 0000000..a310990
--- /dev/null
+++ b/practice/Greeting.class
Binary files differ
diff --git a/practice/Greeting.java b/practice/Greeting.java
new file mode 100644
index 0000000..c4ce7c4
--- /dev/null
+++ b/practice/Greeting.java
@@ -0,0 +1,27 @@
+import java.io.*;
+
+public class Greeting {
+    public static void main(String[] args) {
+        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
+        try {
+            System.out.println("今の時刻は何時？");
+            String line = reader.readLine();
+            int time = Integer.parseInt(line);
+            if (time >= 13 && time <= 18) {
+                System.out.println("午後もゲンキに頑張ろー！");
+            } else if (time >= 0 && time <= 11) {
+                System.out.println("おはよー！");
+            } else if (time >= 19 && time <= 23){
+                System.out.println("夜ですなー。だんだんと眠くなってきた");
+            } else if(time == 12){
+                System.out.println("おっとお昼休憩の時間ですな！");
+            } else {
+                System.out.println("時刻の範囲を超えています。入力し直してください。");
+            }
+        } catch (IOException e) {
+            System.out.println(e);
+        } catch (NumberFormatException e) {
+            System.out.println("数字の形式が正しくありません。");
+        }
+    }
+}
\ No newline at end of file
diff --git a/practice/Switch.class b/practice/Switch.class
new file mode 100644
index 0000000..702916a
--- /dev/null
+++ b/practice/Switch.class
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diff --git a/practice/Switch.java b/practice/Switch.java
new file mode 100644
index 0000000..95e12ef
--- /dev/null
+++ b/practice/Switch.java
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+import java.io.*;
+
+public class Switch {
+    public static void main(String[] args) {
+        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
+        try {
+            System.out.println("朝の飲み物といえば？");
+            System.out.println("1 オレンジジュース");
+            System.out.println("2 コーヒー");
+            System.out.println("3 どちらでもない");
+            System.out.println("1,2,3のどれかを選んでください。");
+            String line = reader.readLine();
+            int n = Integer.parseInt(line);
+            switch (n) {
+            case 1:
+                System.out.println("ビタミン補給、オレンジジュースです。");
+                break;
+
+            case 2:
+                System.out.println("目覚めの一発、コーヒーです。");
+                break;
+
+            default:
+                System.out.println("どちらでもありません。");
+                break;
+            }
+        } catch (IOException e) {
+            System.out.println(e);
+        } catch (NumberFormatException e) {
+            System.out.println("数字の形式が正しくありません。");
+        }
+    }
+}