Chapter 11: Strings

JDK 7u6 dan pastki qator usuli har doim barcha asosiy [] massivni nusxalaydi, bu murakkablikni oldingi doimiyga nisbatan chiziqli qiladi, lekin bir vaqtning o'zida xotira oqishining yo'qligini kafolatlaydi.

Section 11.9: Platform independent new line separator

Yangi chiziq ajratgich platformadan platformaga farq qilganligi sababli (masalan, Unix-ga o'xshash tizimlarda \n yoki Windowsda \r\n) unga kirishning platformadan mustaqil usuli bo'lishi kerak. Java-da uni tizim xususiyatidan olish mumkin:

Version ≥ Java SE 7
Yangi chiziq ajratgich juda tez-tez talab qilinganligi sababli, Java 7-dan yuqoridagi kod bilan bir xil natijani qaytaruvchi yorliq usulida mavjud:
Yangi chiziq ajratgich juda tez-tez talab qilinganligi sababli, Java 7-dan yuqoridagi kod bilan bir xil natijani qaytaruvchi yorliq usulida mavjud:

System.out.println(String.format('line 1: %s.%nline 2: %s%n', lines[0],lines[1]));

Section 11.10: Reversing Strings

1. 
   Stringni orqaga qaytarish uchun bir nechta usul mavjud.
   
2. 
   StringBuilder/StringBuffer:
   

3. 
   Char array:
   

Section 11.11: Adding toString() method for custom objects

Agar siz yangi Person ob'ektini yaratsangiz:
va keyinchalik kodingizda ob'ektni chop etish uchun quyidagi bayonotdan foydalanasiz:

Live Demo on Ideone you'll get an output similar to the following:

toString

Bu ob'ekt sinfida aniqlangan () usulini amalga oshirish natijasidir, yuqori sinf
Ob'ekt. toString
Shaxs. () hujjatida quyidagilar aytiladi:

The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of: getClass().getName() + '@' + Integer.toHexString(hashCode())

toString

Shunday qilib, mazmunli chiqish uchun siz () usulini bekor qilishingiz kerak bo'ladi:


Now the output will be:

You can also write

Live Demo on Ideone

println