first implementation for new classes creation

src/org/jetbrains/jet/j2k/ast/NewClassExpression.java

@@ -0,0 +1,22 @@
+package org.jetbrains.jet.j2k.ast;
+
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * @author ignatov
+ */
+public class NewClassExpression extends Expression {
+  private final Element myName;
+  private final Element myArguments;
+
+  public NewClassExpression(Element name, Element arguments) {
+    myName = name;
+    myArguments = arguments;
+  }
+
+  @NotNull
+  @Override
+  public String toKotlin() {
+    return myName.toKotlin() + "(" + myArguments.toKotlin() + ")";
+  }
+}

src/org/jetbrains/jet/j2k/visitors/ElementVisitor.java

@@ -1,9 +1,6 @@
 package org.jetbrains.jet.j2k.visitors;
 
-import com.intellij.psi.JavaElementVisitor;
+import com.intellij.psi.*;
-import com.intellij.psi.PsiExpressionList;
-import com.intellij.psi.PsiLocalVariable;
-import com.intellij.psi.PsiParameterList;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.jet.j2k.Converter;
 import org.jetbrains.jet.j2k.ast.*;
@@ -41,6 +38,12 @@ public class ElementVisitor extends JavaElementVisitor implements Visitor {
     );
   }
 
+  @Override
+  public void visitReferenceElement(PsiJavaCodeReferenceElement reference) {
+    super.visitReferenceElement(reference);
+    myResult = new IdentifierImpl(reference.getQualifiedName()); // TODO
+  }
+
   @Override
   public void visitParameterList(PsiParameterList list) {
     super.visitParameterList(list);

src/org/jetbrains/jet/j2k/visitors/ExpressionVisitor.java

@@ -169,8 +169,15 @@ public class ExpressionVisitor extends StatementVisitor implements Visitor {
   public void visitNewExpression(PsiNewExpression expression) {
     super.visitNewExpression(expression);
 
-    if (expression.getArrayInitializer() !=  null) // new Foo[] {}
+    if (expression.getArrayInitializer() != null) // new Foo[] {}
       myResult = expressionToExpression(expression.getArrayInitializer());
+    else {
+      myResult = new NewClassExpression(
+        elementToElement(expression.getClassOrAnonymousClassReference()),
+        elementToElement(expression.getArgumentList())
+      );
+    }
+
   }
 
   @Override

test/org/jetbrains/jet/j2k/ast/NewClassExpressionTest.java

@@ -0,0 +1,25 @@
+package org.jetbrains.jet.j2k.ast;
+
+import junit.framework.Assert;
+import org.jetbrains.jet.j2k.JetTestCaseBase;
+
+/**
+ * @author ignatov
+ */
+public class NewClassExpressionTest extends JetTestCaseBase {
+  public void testClassWithoutBody() throws Exception {
+    Assert.assertEquals(expressionToSingleLineKotlin("new Foo();"), "Foo()");
+  }
+
+  public void testClassWithoutBody2() throws Exception {
+    Assert.assertEquals(expressionToSingleLineKotlin("new myApp.Foo();"), "myApp.Foo()");
+  }
+
+  public void testClassWithParam() throws Exception {
+    Assert.assertEquals(expressionToSingleLineKotlin("new Foo(param);"), "Foo(param)");
+  }
+
+  public void testClassWithParams() throws Exception {
+    Assert.assertEquals(expressionToSingleLineKotlin("new Foo(param1, param2);"), "Foo(param1, param2)");
+  }
+}