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Groovy example source code file (GroovyPrintWriter.java)

This example Groovy source code file (GroovyPrintWriter.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

filenotfoundexception, filenotfoundexception, groovyprintwriter, groovyprintwriter, io, printwriter, string, string, unsupportedencodingexception, unsupportedencodingexception

The Groovy GroovyPrintWriter.java source code

/*
 * Copyright 2009 the original author or authors.
 *
 * 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
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package groovy.io;

import java.io.File;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.Writer;
import java.io.FileNotFoundException;
import java.io.UnsupportedEncodingException;

import org.codehaus.groovy.runtime.InvokerHelper;

/**
 * A PrintWriter that outputs objects in Groovy style.
 * That means print(Object) uses InvokerHelper.toString(Object)
 * to produce the same results as Writer.print(Object).
 *
 * @author Jim White
 * @since 1.6
 */
public class GroovyPrintWriter extends PrintWriter 
{
    public GroovyPrintWriter(File file) throws FileNotFoundException
    {
        super(file);
    }

    public GroovyPrintWriter(File file, String csn)
        throws FileNotFoundException, UnsupportedEncodingException
    {
        super(file, csn);
    }

    public GroovyPrintWriter(Writer out) 
    {
        super(out);
    }

    public GroovyPrintWriter(Writer out, boolean autoflush) 
    {
        super(out, autoflush);
    }

    public GroovyPrintWriter(OutputStream out) 
    {
        super(out);
    }

    public GroovyPrintWriter(OutputStream out, boolean autoflush) 
    {
        super(out, autoflush);
    }

    public GroovyPrintWriter(String filename) throws FileNotFoundException 
    {
        super(filename);
    }

    public GroovyPrintWriter(String filename, String csn)
        throws FileNotFoundException, UnsupportedEncodingException 
    {
        super(filename, csn);
    }
        
// Don't need to do this if Groovy is going to print char[] like a string.
//    public void print(char[] x) 
//    {
//        write(InvokerHelper.toString(x));
//    }

    public void print(Object x) 
    {
        write(InvokerHelper.toString(x));
    }

    public void println(Object x) 
    {
        // JDK 1.6 has changed the implementation to do a
        // String.valueOf(x) rather than call print(x).
        // Probably to improve performance by doing the conversion outside the lock.
        // This will do the same thing for us, and we don't have to have access to the lock.
        println(InvokerHelper.toString(x));
    }
}

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