Properioties用法

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import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

public class PropertiesUtil {
    private Properties properties;
    public PropertiesUtil(String path){
        properties=new Properties();
        InputStream inputStream = this.getClass().getResourceAsStream(path);
        try {
            properties.load(inputStream);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    public String getProperties(String key){
        return properties.getProperty(key);
    }
}