Refactoring of VoltageControlTables com.aokp.romcontrol.performance.VoltageControlTable I just narrowed the scope of some Objects, and moved finding the location to the Class initialization. This way we don't overly expose variables used by the class in

VoltageControlTable.java

package com.jbirdvegas.example;

import android.util.Log;

import java.io.File;

public class VoltageControlTable {

    private final String TAG = getClass().getSimpleName();
    private String mTable = null;

    public VoltageControlTable() {
        File file = null;
        String[] possibleLocations = {
            "UV_mV_table",
            "vdd_levels",
            "vdd_sysfs_levels" };
        for (int i = 0; i < 3; i++) {
            file = new File("/sys/devices/system/cpu/cpu0/cpufreq/" + possibleLocations[i]);
            if (file.exists()) {
                Log.d(TAG, "/sys/devices/system/cpu/cpu0/cpufreq/" + possibleLocations[i] + " is found and being used");
                mTable = possibleLocations[i];
                break;
            } else {
                Log.d(TAG, possibleLocations[i] + " kernel voltage implementation not found");
                mTable = null;
            }
        }
    }

    /**
     * added this incase we ever need to know the location
     * @return the location of the voltage control directory
     */
    public String getVoltageControlLocation() {
        if (mTable == null) {
            // meh we could return null here but thats up to you
            return "no_voltage_table_found";
        }
        return mTable;
    }

    public String getTable(int tableNumber) {
        if (mTable == null) {
            // again we could return null here but thats up to you
            return "no_voltage_table_found";
        }
        return "/sys/devices/system/cpu/cpu" + tableNumber + "/cpufreq/" + mTable;
    }
}

and given that this was literally my first attempt to write more than 3 lines of original java code, i won't hate anyone who would help me out with better examples

so thank you a lot :)