From 33613a85afc4b1481367fbe92a17ee59c240250b Mon Sep 17 00:00:00 2001
From: Sven Eisenhauer <sven@sven-eisenhauer.net>
Date: Fri, 10 Nov 2023 15:11:48 +0100
Subject: add new repo

---
 .../hjp5/examples/FloatTables.java                 | 54 ++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 Master/Reference Architectures and Patterns/hjp5/examples/FloatTables.java

(limited to 'Master/Reference Architectures and Patterns/hjp5/examples/FloatTables.java')

diff --git a/Master/Reference Architectures and Patterns/hjp5/examples/FloatTables.java b/Master/Reference Architectures and Patterns/hjp5/examples/FloatTables.java
new file mode 100644
index 0000000..25ea516
--- /dev/null
+++ b/Master/Reference Architectures and Patterns/hjp5/examples/FloatTables.java	
@@ -0,0 +1,54 @@
+/* FloatTables.java */
+
+import java.lang.reflect.*;
+
+public class FloatTables
+{
+  public static double times2(double value)
+  {
+    return 2 * value;
+  }
+
+  public static double sqr(double value)
+  {
+    return value * value;
+  }
+
+  public static void printTable(String methname)
+  {
+    try {
+      System.out.println("Wertetabelle fuer " + methname);
+      int pos = methname.lastIndexOf('.'); 
+      Class clazz;
+      if (pos == -1) {
+        clazz = FloatTables.class;
+      } else {
+        clazz = Class.forName(methname.substring(0, pos));
+        methname = methname.substring(pos + 1);
+      }
+      Class[] formparas = new Class[1];
+      formparas[0] = Double.TYPE;
+      Method meth = clazz.getMethod(methname, formparas);
+      if (!Modifier.isStatic(meth.getModifiers())) {
+        throw new Exception(methname + " ist nicht static");
+      }
+      Object[] actargs = new Object[1];
+      for (double x = 0.0; x <= 5.0; x += 1) {
+        actargs[0] = new Double(x); 
+        Double ret = (Double)meth.invoke(null, actargs);
+        double result = ret.doubleValue();
+        System.out.println("  " + x + " -> " + result);
+      }
+    } catch (Exception e) {
+      System.err.println(e.toString());
+    }
+  }
+
+  public static void main(String[] args)
+  {
+    printTable("times2");
+    printTable("java.lang.Math.exp");
+    printTable("sqr");
+    printTable("java.lang.Math.sqrt");
+  }
+}
\ No newline at end of file
-- 
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