In Groovy, the break statement is used to exit out of loops. It is commonly used with the for and while loops, and it terminates the loop immediately when the condition is met.
Here are some examples of how to use the break statement in Groovy:
1. Using break with a for loop:
for (i in 1..10) {
if (i == 5) {
break
}
println(i)
}
Output: 1 2 3 4
In this example, the loop will iterate from 1 to 10, but when the value of i becomes 5, the break statement is executed and the loop is terminated.
2. Using break with a while loop:
def i = 1
while (i <= 10) {
if (i == 5) {
break
}
println(i)
i++
}
Output: 1 2 3 4
In this example, the loop will continue as long as the value of i is less than or equal to 10. However, when the value of i becomes 5, the break statement is executed and the loop is terminated.
3. Using break with a switch statement:
def x = 2
switch (x) {
case 1:
println("One")
break
case 2:
println("Two")
break
default:
println("Other")
}
Output: Two
In this example, the switch statement checks the value of x. When the value is 2, the break statement is executed and the code exits out of the switch statement.
Note that the break statement can also be used with nested loops. When used in a nested loop, break only terminates the inner loop and execution continues with the next iteration of the outer loop.