9 Kotlinの感触 Kotlinのクラス Java public final class NormalClass { @NotNull private final String a; @NotNull public final String getA() { return this .a; } public NormalClass (@NotNull String a) { Intrinsics.checkNotNullParameter (a, "a"); super (); this .a = a; } } Kotlin class NormalClass( val a : String )
Java Kotlin 10 Kotlinの感触 Kotlinのデータクラス public final class DataClass { @NotNull private final String a; @NotNull public final String getA() {/*(略)*/} public DataClass(@NotNull String a) {/*(略)*/} @NotNull public final String component1(){/*(略)*/} @NotNull public final DataClass copy(@NotNull String a) {/*(略)*/} @NotNull public String toString() {/*(略)*/} public int hashCode() {/*(略)*/} public boolean equals(@Nullable Object var1) {/*(略)*/} } data class DataClass( val a : String )
11 Kotlinの感触 KotlinのSealedクラス public abstract class Animal { private Animal() { } /*(略)*/ public static final class Dog extends Animal { @NotNull public static final Animal.Dog INSTANCE; private Dog() {/*(略)*/} } public static final class Cat extends Animal { @NotNull public static final Animal.Cat INSTANCE; private Cat(){/*(略)*/} } } sealed class Animal { object Dog: Animal() object Cat: Animal() } Java Kotlin
12 Kotlinの感触 Javaとの相互運用性 public static void main(String[] args) {} @Override new KotlinHoge() public int a; private final transient int b; private volatile int c; public final synchronized void hoge() {} public final strictfp void piyo() {} public final void fuga() throws IOException {) @JvmStatic fun main(args: Array) {} override @file:JvmName ("KotlinHoge" ) @JvmField var a : Int = 0 @Transient val b : Int = 0 @Volatile var c : Int = 0 @Synchronized fun hoge(){} @Strictfp fun piyo(){} @Throws(IOException:: class) fun fuga(){} Java Kotlin
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