can kotlin be used in place of java code example

Example 1: Kotlin is like java

val label = "The width is "
val width = 94
val widthLabel = label + width
// The width is 94

Example 2: Kotlin is like java

val explicitDouble: Double = 70.0

Example 3: Kotlin is like java

val apples = 3
val oranges = 5
val fruitSummary = "I have ${apples + oranges} " +
                   "pieces of fruit."