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/SparseTableModel.java            | 75 ++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 Master/Reference Architectures and Patterns/hjp5/examples/SparseTableModel.java

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

diff --git a/Master/Reference Architectures and Patterns/hjp5/examples/SparseTableModel.java b/Master/Reference Architectures and Patterns/hjp5/examples/SparseTableModel.java
new file mode 100644
index 0000000..cd9c3d2
--- /dev/null
+++ b/Master/Reference Architectures and Patterns/hjp5/examples/SparseTableModel.java	
@@ -0,0 +1,75 @@
+/* SparseTableModel.java */
+
+import java.util.*;
+import javax.swing.*;
+import javax.swing.table.*;
+
+public class SparseTableModel
+extends AbstractTableModel
+{
+  private int size;
+  private Hashtable data;
+
+  //Konstruktor
+  public SparseTableModel(int size)
+  {
+    this.size = size;
+    this.data = new Hashtable();
+  }
+
+  //Methoden für das TableModel-Interface
+  public int getRowCount()
+  {
+    return size;
+  }
+
+  public int getColumnCount()
+  {
+    return size;
+  }
+
+  public String getColumnName(int columnIndex)
+  {
+    return "C" + columnIndex;
+  }
+
+  public Class getColumnClass(int columnIndex)
+  {
+    return String.class;
+  }
+
+  public boolean isCellEditable(int rowIndex, int columnIndex)
+  {
+    return rowIndex < size && columnIndex < size;
+  }
+
+  public Object getValueAt(int rowIndex, int columnIndex)
+  {
+    String key = "[" + rowIndex + "," + columnIndex + "]";
+    String value = (String)data.get(key);
+    return value == null ? "-" : value;
+  }
+
+  public void setValueAt(Object aValue, int rowIndex, int columnIndex)
+  {
+    String key = "[" + rowIndex + "," + columnIndex + "]";
+    String value = (String)aValue;
+    if (value.length() <= 0) {
+      data.remove(key);
+    } else {
+      data.put(key, value);
+    }
+  }
+
+  //Zusätzliche Methoden
+  public void printData()
+  {
+    Enumeration e = data.keys();
+    while (e.hasMoreElements()) {
+      String key = (String)e.nextElement();
+      System.out.println(
+        "At " + key + ": " + (String)data.get(key)
+      );
+    }
+  }
+}
\ No newline at end of file
-- 
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