add java queries (#225)

* add java queries

* remove unused alternation in java

* add example java test file

queries/java/context.scm

@@ -0,0 +1,21 @@
+(if_statement
+  consequence: (_) @context.end
+) @context
+
+(method_declaration
+  body: (_) @context.end
+) @context
+
+(for_statement
+  body: (_) @context.end
+) @context
+
+(enhanced_for_statement
+  body: (_) @context.end
+) @context
+
+(class_declaration
+  body: (_) @context.end
+) @context
+
+(expression_statement) @context

test/test.java

@@ -0,0 +1,44 @@
+package mymod;
+
+import stuff1;
+import stuff2;
+
+@class_annot_1
+@class_annot_2
+public class MyClass {
+
+
+
+
+    @method_annot_1
+    @method_annot_2
+    public void my_method(int param) {
+
+
+
+
+        if (true) {
+
+
+
+
+            for (int i = 0; i < 10; i++) {
+                
+
+
+
+                for (int var : iterable) {
+                    
+
+
+
+                    System.
+
+
+
+                        out.println("a message");
+                }
+            }
+        }
+    }
+}