String

package com.bjsxt.scala

object Lesson_string {
  def main(args: Array[String]): Unit = {
    val s = "bjsxt"
    val s1 = "BJSXT"
//    println(s.indexOf(97))
//    println(s.equalsIgnoreCase(s1))
    
    val builder = new StringBuilder()
    builder.+(‘a‘)
    builder.++=("bc")
    builder.append(true)
    println(builder)
  }
}