Use StringBuilder instead of StringBuffer

h2/src/main/org/h2/command/Parser.java

@@ -1201,7 +1201,7 @@ public class Parser {
 
         // build and prepare the targetMatchQuery ready to test each rows
         // existence in the target table (using source row to match)
-        StringBuffer targetMatchQuerySQL = new StringBuffer(
+        StringBuilder targetMatchQuerySQL = new StringBuilder(
                 "SELECT _ROWID_ FROM " + command.getTargetTable().getName());
         if (command.getTargetTableFilter().getTableAlias() != null) {
             targetMatchQuerySQL.append(

h2/src/main/org/h2/table/TableFilter.java

@@ -788,7 +788,7 @@ public class TableFilter implements ColumnResolver {
             }
         }
         if (nestedJoin != null) {
-            StringBuffer buffNested = new StringBuffer();
+            StringBuilder buffNested = new StringBuilder();
             TableFilter n = nestedJoin;
             do {
                 buffNested.append(n.getPlanSQL(n != nestedJoin));

h2/src/main/org/h2/util/OsgiDataSourceFactory.java

@@ -197,7 +197,7 @@ public class OsgiDataSourceFactory implements DataSourceFactory {
         }
 
         // Setting URL
-        StringBuffer connectionUrl = new StringBuffer();
+        StringBuilder connectionUrl = new StringBuilder();
         if (p.containsKey(DataSourceFactory.JDBC_URL)) {
             // Use URL if specified
             connectionUrl.append(p.remove(DataSourceFactory.JDBC_URL));

h2/src/test/org/h2/test/db/TestGeneralCommonTableQueries.java

@@ -548,7 +548,7 @@ public class TestGeneralCommonTableQueries extends TestBase {
 
             int rowNdx=0;
             while (rs.next()) {
-                StringBuffer buf = new StringBuffer();
+                StringBuilder buf = new StringBuilder();
                 for(int columnIndex = 1; columnIndex <= rs.getMetaData().getColumnCount(); columnIndex++){
                     buf.append("|"+rs.getString(columnIndex));
                 }

h2/src/test/org/h2/test/db/TestMergeUsing.java

@@ -305,7 +305,7 @@ public class TestMergeUsing extends TestBase implements Trigger {
                     + expectedResultsSQL + " )");
 
             int rowCount = 0;
-            StringBuffer diffBuffer = new StringBuffer("");
+            StringBuilder diffBuffer = new StringBuilder("");
             while (rs.next()) {
                 rowCount++;
                 diffBuffer.append("|");
@@ -401,7 +401,7 @@ public class TestMergeUsing extends TestBase implements Trigger {
     }
 
     private String getCreateTriggerSQL() {
-        StringBuffer buf = new StringBuffer();
+        StringBuilder buf = new StringBuilder();
         buf.append("CREATE TRIGGER INS_BEFORE " + "BEFORE INSERT ON PARENT "
                 + "FOR EACH ROW NOWAIT CALL \"" + getClass().getName() + "\";");
         buf.append("CREATE TRIGGER UPD_BEFORE " + "BEFORE UPDATE ON PARENT "

h2/src/tools/org/h2/java/Statement.java

@@ -344,7 +344,7 @@ class ForStatement extends StatementBase {
 
     @Override
     public String asString() {
-        StringBuffer buff = new StringBuffer();
+        StringBuilder buff = new StringBuilder();
         buff.append("for (");
         if (iterableType != null) {
             Type it = iterable.getType();