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Pulling values from a Java Properties file in order?

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庸人自扰
庸人自扰 2020-12-02 18:32

I have a properties file where the order of the values is important. I want to be able to iterate through the properties file and output the values based on the order of the

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  • 无人及你
    无人及你 (楼主)
    2020-12-02 19:27

    Extend java.util.Properties, override both put() and keys():

    import java.util.Collections;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.Properties;
import java.util.HashMap;

public class LinkedProperties extends Properties {
    private final HashSet keys = new LinkedHashSet();

    public LinkedProperties() {
    }

    public Iterable orderedKeys() {
        return Collections.list(keys());
    }

    public Enumeration keys() {
        return Collections.enumeration(keys);
    }

    public Object put(Object key, Object value) {
        keys.add(key);
        return super.put(key, value);
    }
}

    
    
             
    
                                                        
    
            
            
    
              
                
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