Java tutorial
//package com.java2s; /* * Copyright (C) 2006 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import android.util.Log; import java.util.Arrays; import java.util.List; public class Main { /** my code to convert from List<Double> to double[] * */ public static float[] toFloatArray(List<Float> lf) { float[] results = new float[lf.size()]; int i = 0; for (Float f : lf) { results[i++] = (f != null ? f : 0); } Log.i("TAG", "float conversion results " + Arrays.toString(results)); return results; } }