bundles/org.tukani.xz/src/org/tukaani/xz/LZMA2Options.java
public void setPreset(int preset) throws UnsupportedOptionsException {
        if (preset < 0 || preset > 9)
            throw new UnsupportedOptionsException(
                    "Unsupported preset: " + preset);

        lc = LC_DEFAULT;
        lp = LP_DEFAULT;
        pb = PB_DEFAULT;
        dictSize = presetToDictSize[preset];

        if (preset <= 3) {
            mode = MODE_FAST;
            mf = MF_HC4;
            niceLen = preset <= 1 ? 128 : NICE_LEN_MAX;
            depthLimit = presetToDepthLimit[preset];
        } else {
            mode = MODE_NORMAL;
            mf = MF_BT4;
            niceLen = (preset == 4) ? 16 : (preset == 5) ? 32 : 64;
            depthLimit = 0;
        }
    }
public void setPreset(int preset) throws UnsupportedOptionsException {
        if (preset < 0 || preset > 9)
            throw new UnsupportedOptionsException(
                    "Unsupported preset: " + preset);

        lc = LC_DEFAULT;
        lp = LP_DEFAULT;
        pb = PB_DEFAULT;
        dictSize = presetToDictSize[preset];

        if (preset <= 3) {
            mode = MODE_FAST;
            mf = MF_HC4;
            niceLen = preset <= 1 ? 128 : NICE_LEN_MAX;
            depthLimit = presetToDepthLimit[preset];
        } else {
            mode = MODE_NORMAL;
            mf = MF_BT4;
            niceLen = (preset == 4) ? 16 : (preset == 5) ? 32 : 64;
            depthLimit = 0;
        }
    }
Sets the compression options to the given preset.
<p>
The presets 0-3 are fast presets with medium compression.
The presets 4-6 are fairly slow presets with high compression.
The default preset (<code>PRESET_DEFAULT</code>) is 6.
<p>
The presets 7-9 are like the preset 6 but use bigger dictionaries
and have higher compressor and decompressor memory requirements.
Unless the uncompressed size of the file exceeds 8&nbsp;MiB,
16&nbsp;MiB, or 32&nbsp;MiB, it is waste of memory to use the
presets 7, 8, or 9, respectively.

@throws      UnsupportedOptionsException
<code>preset</code> is not supported