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  * Copyright 2014 Attila Szegedi, Daniel Dekany, Jonathan Revusky
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package freemarker.template;
A simple implementation of the TemplateScalarModel interface, using a String. As of version 2.0 this object is immutable.

This class is thread-safe.

public final class SimpleScalar 
implements TemplateScalarModelSerializable {

the value of this SimpleScalar if it wraps a String.
    private final String value;

Constructs a SimpleScalar containing a string value.

value the string value. If this is null, its value in FTL will be "".
    public SimpleScalar(String value) {
        this. = value;
    public String getAsString() {
        return ( == null) ? "" : ;
    public String toString() {
        // [2.4] Shouldn't return null
        return ;
Same as calling the constructor, except that for a null parameter it returns null.

    public static SimpleScalar newInstanceOrNull(String s) {
        return s != null ? new SimpleScalar(s) : null;
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