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Problem using Java Filereader/FileWriter


Zcelo12
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Hello,

I'm trying to edit the configuration of another mod using FileReader/FileWriter in Java.

My problem is that it only add the line i've edited, the other text in the configuration is gone.

Can someone help me?

 

private class CheckDynamicsConfig extends Thread
    {
        @Override
        public void run()
        {            
                
                try {
            		BufferedReader in = new BufferedReader(new FileReader("C:\\Users\\abt\\Desktop\\forge804\\mcp\\jars\\config\\DynamicLights_thePlayer.cfg"));
            		String line = null;
            		while ((line = in.readLine()) != null) {
            			if (line.contains("S:LightItems"))
                        {
            			if (!line.contains("4020"))
                           {
            				BufferedWriter out = new BufferedWriter(new FileWriter("C:\\Users\\abt\\Desktop\\forge804\\mcp\\jars\\config\\DynamicLights_thePlayer.cfg"));
            				String id = ",4020=10";
            				out.write(line+id);
            				out.close();
                           }
                        }
            		}
            		in.close();
            	} 
                catch (IOException e) {
            		e.printStackTrace();
                }
        }
    }

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FileWriter has a constructor with a boolean to disable overwriting the entire file.

 

When I set the boolean to true, it adds the line at the end of the file. So i've the files twice and in the configuration it isn't among general { ... } . Is there a way to override only the line and set it to the position?

I hope you undertand me.

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There is one problem left. This mod should work universal. When i put in the path the full path with C:\Users... it works, but how can i make it universal like \config\bla.cfg. This can't work because the jar is in the folder versions. Maybe someone can help me

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