--- old/src/sample/nashorn/find_underscores.js	2020-04-15 18:53:44.000000000 +0530
+++ /dev/null	2020-04-15 18:53:44.000000000 +0530
@@ -1,101 +0,0 @@
-/*
- * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- *   - Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- *
- *   - Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution.
- *
- *   - Neither the name of Oracle nor the names of its
- *     contributors may be used to endorse or promote products derived
- *     from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
- * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-// Usage: jjs find_underscores.js -- <directory>
-
-if (arguments.length == 0) {
-    print("Usage: jjs find_underscores.js -- <directory>");
-    exit(1);
-}
-
-// Java types used
-var File = Java.type("java.io.File");
-var Files = Java.type("java.nio.file.Files");
-var StringArray = Java.type("java.lang.String[]");
-var ToolProvider = Java.type("javax.tools.ToolProvider");
-var Tree = Java.type("com.sun.source.tree.Tree");
-var Trees = Java.type("com.sun.source.util.Trees");
-var TreeScanner = Java.type("com.sun.source.util.TreeScanner");
-
-function findUnderscores() {
-    // get the system compiler tool
-    var compiler = ToolProvider.systemJavaCompiler;
-    // get standard file manager
-    var fileMgr = compiler.getStandardFileManager(null, null, null);
-    // Using Java.to convert script array (arguments) to a Java String[]
-    var compUnits = fileMgr.getJavaFileObjects(Java.to(arguments, StringArray));
-    // create a new compilation task
-    var task = compiler.getTask(null, fileMgr, null, null, null, compUnits);
-    var sourcePositions = Trees.instance(task).sourcePositions;
-    // subclass SimpleTreeVisitor - to find underscore variable names
-    var UnderscoreFinder = Java.extend(TreeScanner);
-
-    var visitor = new UnderscoreFinder() {
-        // override to capture information on current compilation unit
-        visitCompilationUnit: function(compUnit, p) {
-            this.compUnit = compUnit;
-            this.lineMap = compUnit.lineMap;
-            this.fileName = compUnit.sourceFile.name;
-
-            return Java.super(visitor).visitCompilationUnit(compUnit, p);
-        },
-
-        // override to check variable name
-        visitVariable: function(node, p) {
-            if (node.name.toString() == "_") {
-                var pos = sourcePositions.getStartPosition(this.compUnit, node);
-                var line = this.lineMap.getLineNumber(pos);
-                var col = this.lineMap.getColumnNumber(pos);
-                print(node + " @ " + this.fileName + ":" + line + ":" + col);
-            }
-
-            return Java.super(visitor).visitVariable(node, p);
-        }
-    }
-
-    for each (var cu in task.parse()) {
-        cu.accept(visitor, null);
-    }
-}
-
-// for each ".java" file in directory (recursively).
-function main(dir) {
-    var totalCount = 0;
-    Files.walk(dir.toPath()).
-      forEach(function(p) {
-          var name = p.toFile().absolutePath;
-          if (name.endsWith(".java")) {
-              findUnderscores(p);
-          }
-      });
-}
-
-main(new File(arguments[0]));