Ting-Yuan Huang
74e8c7c1c5
Quoted from https://kotlinlang.org/docs/reference/classes.html "On the JVM, if all of the parameters of the primary constructor have default values, the compiler will generate an additional parameterless constructor which will use the default values. This makes it easier to use Kotlin with libraries such as Jackson or JPA that create class instances through parameterless constructors."
42 lines
1016 B
Kotlin
Vendored
42 lines
1016 B
Kotlin
Vendored
// TARGET_BACKEND: JVM
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// FILE: WithPrimary.java
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class WithPrimary {
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public static A test1() {
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return new A("123", "abc");
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}
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public static A test2() {
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return new A();
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}
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public static A test3() {
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return new A("123", 456);
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}
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public static A test4() {
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return new A(1.0);
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}
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}
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// FILE: WithPrimary.kt
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class A(val x: String = "def_x", val y: String = "1") {
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constructor(x: String, y: Int): this(x, y.toString()) {}
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constructor(x: Double): this(x.toString(), "def_y") {}
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override fun toString() = "$x#$y"
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}
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fun box(): String {
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val test1 = WithPrimary.test1().toString()
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if (test1 != "123#abc") return "fail1: $test1"
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val test2 = WithPrimary.test2().toString()
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if (test2 != "def_x#1") return "fail2: $test2"
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val test3 = WithPrimary.test3().toString()
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if (test3 != "123#456") return "fail3: $test3"
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val test4 = WithPrimary.test4().toString()
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if (test4 != "1.0#def_y") return "fail4: $test4"
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return "OK"
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}
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