Minor code corrections after review

j2k/src/org/jetbrains/kotlin/j2k/CodeConverter.kt

@@ -101,7 +101,7 @@ class CodeConverter(
                         text += "f"
                     }
                     else {
-                        if (text.indexOf('.') < 0) {
+                        if (!text.contains(".")) {
                             text += ".0"
                         }
                     }

j2k/src/org/jetbrains/kotlin/j2k/Converter.kt

@@ -176,22 +176,24 @@ class Converter private(
                         modifiers = modifiers.with(Modifier.INNER)
                     }
 
-                    val openModifier = if (psiClass.hasModifierProperty(PsiModifier.FINAL) || psiClass.hasModifierProperty(PsiModifier.ABSTRACT))
-                        false
-                    else
-                        settings.openByDefault || referenceSearcher.hasInheritors(psiClass)
-
-                    if (openModifier) {
+                    if (needOpenModifier(psiClass)) {
                         modifiers = modifiers.with(Modifier.OPEN)
                     }
 
-                    val classBody = ClassBodyConverter(psiClass, this, modifiers.contains(Modifier.OPEN) || modifiers.contains(Modifier.ABSTRACT), isObject = false).convertBody()
+                    val classBody = ClassBodyConverter(psiClass, this, isOpenClass = modifiers.contains(Modifier.OPEN) || modifiers.contains(Modifier.ABSTRACT), isObject = false).convertBody()
                     Class(name, annotations, modifiers, typeParameters, extendsTypes, classBody.baseClassParams, implementsTypes, classBody)
                 }
             }
         }.assignPrototype(psiClass)
     }
 
+    private fun needOpenModifier(psiClass: PsiClass): Boolean {
+        return if (psiClass.hasModifierProperty(PsiModifier.FINAL) || psiClass.hasModifierProperty(PsiModifier.ABSTRACT))
+            false
+        else
+            settings.openByDefault || referenceSearcher.hasInheritors(psiClass)
+    }
+
     private fun shouldConvertIntoObject(psiClass: PsiClass): Boolean {
         val methods = psiClass.getMethods()
         val fields = psiClass.getFields()

j2k/src/org/jetbrains/kotlin/j2k/ExpressionConverter.kt

@@ -336,7 +336,7 @@ class DefaultExpressionConverter : JavaElementVisitor(), ExpressionConverter {
     }
 
     override fun visitPostfixExpression(expression: PsiPostfixExpression) {
-        result = PostfixOperator(getOperatorString(expression.getOperationSign().getTokenType()),
+        result = PostfixExpression(getOperatorString(expression.getOperationSign().getTokenType()),
                                    codeConverter.convertExpression(expression.getOperand()))
     }
 

j2k/src/org/jetbrains/kotlin/j2k/ast/Expressions.kt

@@ -87,7 +87,7 @@ class PrefixExpression(val op: String, val expression: Expression) : Expression(
         get() = expression.isNullable
 }
 
-class PostfixOperator(val op: String, val expression: Expression) : Expression() {
+class PostfixExpression(val op: String, val expression: Expression) : Expression() {
     override fun generateCode(builder: CodeBuilder) {
         builder.appendOperand(this, expression) append op
     }

j2k/src/org/jetbrains/kotlin/j2k/ast/Util.kt

@@ -37,7 +37,7 @@ fun CodeBuilder.appendOperand(expression: Expression, operand: Expression, paren
 
 private fun Expression.precedence(): Int? {
     return when(this) {
-        is QualifiedExpression, is MethodCallExpression, is ArrayAccessExpression, is PostfixOperator, is BangBangExpression, is StarExpression -> 0
+        is QualifiedExpression, is MethodCallExpression, is ArrayAccessExpression, is PostfixExpression, is BangBangExpression, is StarExpression -> 0
 
         is PrefixExpression -> 1