Fix some obvious compiler warnings

Author: ig0774

src/main/java/net/sf/jsqlparser/statement/select/SetOperationList.java

@@ -1,6 +1,5 @@
 package net.sf.jsqlparser.statement.select;
 
-import java.util.ArrayList;
 import java.util.List;
 
 /**
@@ -11,33 +10,33 @@
  */
 public class SetOperationList implements SelectBody {
 
-	private List plainSelects;
-	private List operations;
-	private List orderByElements;
+	private List<PlainSelect> plainSelects;
+	private List<SetOperation> operations;
+	private List<OrderByElement> orderByElements;
 	private Limit limit;
 
 	@Override
 	public void accept(SelectVisitor selectVisitor) {
 		selectVisitor.visit(this);
 	}
 
-	public List getOrderByElements() {
+	public List<OrderByElement> getOrderByElements() {
 		return orderByElements;
 	}
 
-	public List getPlainSelects() {
+	public List<PlainSelect> getPlainSelects() {
 		return plainSelects;
 	}
 
-	public List getOperations() {
+	public List<SetOperation> getOperations() {
 		return operations;
 	}
 
-	public void setOrderByElements(List orderByElements) {
+	public void setOrderByElements(List<OrderByElement> orderByElements) {
 		this.orderByElements = orderByElements;
 	}
 
-	public void setOpsAndSelects(List select, List ops) {
+	public void setOpsAndSelects(List<PlainSelect> select, List<SetOperation> ops) {
 		plainSelects = select;
 		operations = ops;
 
@@ -78,10 +77,10 @@ public String toString() {
 	 * list of set operations.
 	 */
 	public enum SetOperationType {
-
 		INTERSECT,
 		EXCEPT,
 		MINUS,
 		UNION
 	}
+
 }

src/main/java/net/sf/jsqlparser/util/deparser/ExpressionDeParser.java

@@ -1,7 +1,6 @@
 package net.sf.jsqlparser.util.deparser;
 
 import java.util.Iterator;
-import java.util.List;
 
 import net.sf.jsqlparser.expression.AllComparisonExpression;
 import net.sf.jsqlparser.expression.AnalyticExpression;

src/test/java/net/sf/jsqlparser/test/simpleparsing/CCJSqlParserManagerTest.java

@@ -1,15 +1,13 @@
 package net.sf.jsqlparser.test.simpleparsing;
 
 import java.io.BufferedReader;
-import java.io.File;
-import java.io.FileReader;
 import java.io.InputStreamReader;
 import java.io.StringReader;
 
 import junit.framework.TestCase;
+
 import net.sf.jsqlparser.JSQLParserException;
 import net.sf.jsqlparser.parser.CCJSqlParserManager;
-import net.sf.jsqlparser.statement.Statement;
 import net.sf.jsqlparser.test.TestException;
 import net.sf.jsqlparser.test.create.CreateTableTest;
 
@@ -30,8 +28,7 @@ public void testParse() throws Exception {
 				if (statement == null)
 					break;
 
-				Statement parsedStm = parserManager.parse(new StringReader(statement));
-				// System.out.println(statement);
+				parserManager.parse(new StringReader(statement));
 			} catch (JSQLParserException e) {
 				throw new TestException("impossible to parse statement: " + statement, e);
 			}