diff --git a/Matrix.java b/Matrix.java
new file mode 100644
index 0000000000000000000000000000000000000000..96955f79bb318eff7a283f6a2389390dd7c8a888
--- /dev/null
+++ b/Matrix.java
@@ -0,0 +1,43 @@
+package graph;
+
+public class Matrix {
+    public char[] vertex = new char[20];
+    public int lable;
+    int flag[] = new int[20];
+    public int[][] along = new int[20][20];
+	public Matrix() {
+		this.lable = 0;
+	}
+	public void addVertex(char place) {
+    	vertex[lable++] = place;
+    }
+    public void addEdge(int start, int end) {
+    	along[start][end] = 1;
+    	along[end][start] = 1;
+    }
+    public void printMatrix() {
+    	System.out.print("  ");
+    	for(int p = 0; p < lable; p++) System.out.print(vertex[p]+" "); 
+    	System.out.println();
+        for(int i = 0; i < lable; i++) {
+        	System.out.print(vertex[i]+" ");
+            for(int j = 0; j < lable; j++) System.out.print(along[i][j]+" ");
+            System.out.println();
+        }
+    }
+    public void depth() {
+		flag[0] = 1;
+		System.out.print(vertex[0]);
+		dfs(0);
+		System.out.println();
+    }
+    public void dfs(int n) {
+    	for (int s = n; s < lable; s++) 
+    		for (int v = n; v < lable; v++)
+    			if(along[s][v] == 1 && flag[v] != 1) {
+    				flag[v] = 1;
+    				System.out.print(vertex[v]);
+    				dfs(v);
+    			}
+    }
+}
diff --git a/Table.java b/Table.java
new file mode 100644
index 0000000000000000000000000000000000000000..d82812a9b55670accfbec2583ba05d91f0078357
--- /dev/null
+++ b/Table.java
@@ -0,0 +1,5 @@
+package graph;
+
+public class Table {
+
+}
diff --git a/Text.java b/Text.java
new file mode 100644
index 0000000000000000000000000000000000000000..b0bc7d64ef984a0c5c4093d8f8d616eab1256d6c
--- /dev/null
+++ b/Text.java
@@ -0,0 +1,5 @@
+package graph;
+
+public class Text {
+
+}