Concat operator in Groovy

def name = "Agnibha"
println("Character at 3rd Index => " + name[3])
println("indexOf character 'i' will give first occurrence of the character at position => " + name.indexOf("i") )
println("First 3 characters of the name => " + name[0..2])
println("Every other character => " + name[0,2,4])
println("Concatenation example using + operator => " + name)
println("Concatenation example using .concat method => ".concat(name))