fixing jekyll build error

Author: andreasprlic

_wikis/BioJava:CookBook:Interfaces:ViewAsTree.md

@@ -21,7 +21,8 @@ The following program demonstrates the use of a FeatureTree. It takes
 two arguments. The first is the name of a file containing sequence data.
 The second is a number specifying the format of the data.
 
-<java> import java.awt.\*; import java.awt.event.\*; import java.io.\*;
+```java
+import java.awt.\*; import java.awt.event.\*; import java.io.\*;
 
 import javax.swing.\*;
 
@@ -95,17 +96,19 @@ public class TreeFrame extends JFrame {
 `   }`  
 ` }`
 
-} </java>
+}
+```
 
 To draw Tree by Clustering Algorithms (**UPGMA** and **NJ**) a Distance
 Matrix is taken as input. Graphics allow to draw tree with the drawLine
 function. Match7 will be the main class for the call of NewClass having
 functions for UPGMA and NJ.
 
-<java> package ClusteringAlgorithms public class Match7 { public static
+```java
+package ClusteringAlgorithms public class Match7 { public static
 void main(String[] args) {
 
-double[][] ds1 = {{},
+double[][] ds1 = { { },
 
 `              {3.5},`  
 `              {17.0,14.0},`  
@@ -125,9 +128,9 @@ double[][] ds1 = {{},
 
 }
 
-</java>
+```
 
-<java>
+```java
 
 import java.awt.\*; import java.awt.event.\*;
 
@@ -541,4 +544,4 @@ class ClosableFrame extends Frame {
 
 }
 
-</java>
+```