How to interpret and translate kotlin code to java?

How to interpret and translate kotlin code to java?

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How to interpret and translate kotlin code to java?
Tag : java , By : 66.
Date : November 25 2020, 03:01 PM

it helps some times The method setViewPagerScroller uses kotlin anonymous inner class syntax. That is the 'object' part which has no real counterpart in java syntax.
private void setViewPagerScroller() {
    try {
        Field scrollerField = ViewPager.class.getDeclaredField("mScroller");

        Field interpolator = ViewPager.class.getDeclaredField("sInterpolator");

        Scroller scroller = new Scroller(this, (android.view.animation.Interpolator) interpolator.get(null)){

            public void startScroll(int startX, int startY, int dx, int dy, int duration) {
                super.startScroll(startX, startY, dx, dy, duration * 7);

        scrollerField.set(viewPager, scroller);
    } catch (NoSuchFieldException error) {
        // Do nothing.
    } catch (IllegalAccessException error) {
        // Do nothing.
private LockableViewPager viewPager;

private LockableViewPager getViewPager(){
    if(viewPager == null){
        // produce viewpager and store in field
    return viewPager;

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Best way to translate this java code into kotlin

Tag : kotlin , By : Porta
Date : March 29 2020, 07:55 AM
To fix the issue you can do Instead of translating the code literally, make use of Kotlin's stdlib which offers a number of useful extension functions. Here's one version
val text = URL(urlSpec).openConnection().inputStream.bufferedReader().use { it.readText() }
public fun Reader.copyTo(out: Writer, bufferSize: Int = DEFAULT_BUFFER_SIZE): Long {
    var charsCopied: Long = 0
    val buffer = CharArray(bufferSize)
    var chars = read(buffer)
    while (chars >= 0) {
        out.write(buffer, 0, chars)
        charsCopied += chars
        chars = read(buffer)
    return charsCopied

Android Studio translate code from kotlin to java

Tag : java , By : beebob
Date : March 29 2020, 07:55 AM
This might help you I am new to android studio but have come from learning Java in eclipse through university. I've being following along with a simple tutorial that is coded in kotlin however I wanted to create it in Java (although from what I have learnt kotlin is less repetitive). I want to translate the code below from kotlin to java: , Here you go
Button rollButton=findViewById(R.id.rollButton);
TextView resultTexView=findViewById(R.id.resultsTextView);
SeekBar seekBar=findViewById(R.id.seekBar);

button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                int rand = Random().nextInt(seekBar.progress) + 1

How to translate this piece of code from Java to Kotlin?

Tag : android , By : Brianna
Date : March 29 2020, 07:55 AM
should help you out You can use @JvmOverloads and use a default value for your cache, so you do not need a 2nd constructor defined explicitly:
class LruBitmapCache @JvmOverloads constructor(
        sizeInKiloBytes: Int = defaultLruCacheSize
) : LruCache<String, Bitmap>(sizeInKiloBytes), ImageCache {

    protected fun sizeOf(key: String, value: Bitmap): Int = value.rowBytes * value.height / 1024

    fun getBitmap(url: String): Bitmap = get(url)

    fun putBitmap(url: String, bitmap: Bitmap) {
        put(url, bitmap)

    companion object {
        val defaultLruCacheSize: Int
            get() {
                val maxMemory = (Runtime.getRuntime().maxMemory() / 1024).toInt()

                return maxMemory / 8
class LruBitmapCache(
        sizeInKiloBytes: Int
) : LruCache<String, Bitmap>(sizeInKiloBytes), ImageCache {

    constructor(): this(defaultLruCacheSize)

    // omitted for brevity

How to translate code with byte operation from Java to Kotlin?

Tag : java , By : Comfly
Date : March 29 2020, 07:55 AM
With these it helps I would like to translate this method in Kotlin but I do not know what are the variables to cast to do things correctly and have the right operations memories : , I finally found the good cast to do for the unit tests to work.
fun bytestoUUID(buf: ByteArray, offset: Int): UUID {
    var lsb: Long = 0
    for (i in 15 downTo 8) {
        lsb = lsb shl 8 or (buf[i + offset].toLong() and 0xff)

    var msb: Long = 0
    for (i in 7 downTo 0) {
        msb = msb shl 8 or (buf[i + offset].toLong() and 0xff)

    return UUID(msb, lsb)

How to translate this Android Kotlin code to Java code

Tag : java , By : John R
Date : March 29 2020, 07:55 AM
hop of those help? I would recommend another way to read kotlin code assuming you are well familiar with java. You can use below option in android studio.
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