Kepiye cara ngowahi int dadi String ing Jawa

Ing artikel iki kita bakal ngrembug ngowahi int (jinis primitif) lan jinis Obyek (wrapper) Integer menyang String. Ana akeh cara kanggo nindakake ing Jawa.

Carane ngowahi int dadi string ing Jawa

1. Ngonversi kanthi nambah string kosong.

   Cara paling gampang kanggo ngowahi int dadi String gampang banget. Cukup nambahake int utawa Integer string kosong "" lan sampeyan bakal entuk int minangka String. Mengkono amarga nambah int lan String menehi String anyar. Tegese yen sampeyan duwe int x = 5, mung nemtokake x + ""lan sampeyan bakal entuk String anyar.

   Punika conto:

   
   //  converting int to string, Java 
   public class Demo {
      public static void main(String[] args) {
   
          int x = 5;
          //  java int to string
          String xText = x + "";
          //  the result output
          System.out.println("convert int to String, Java: " + xText);
          //  the int output
          System.out.println("our int: " + x);
          //  adding int and String gives the new String
          System.out.println("adding int = 5 and String = \"5\". The result is a new String = " + xText + x);
          //  integer to string, Java code
          Integer y = 7;
          String yText = y + "";
          System.out.println("convert Integer to String: " + yText);
          System.out.println("our Integer: " + y);
          System.out.println("adding Integer = 7 and String = \"7\". The result is a new String = " + y + yText);
      }
   }
   

   Outpute yaiku:

   
   convert int to String, Java: 5
   our int: 5
   adding int = 5 and String = "5". The result is a new String = 55
   convert Integer to String: 7
   our Integer: 7
   adding Integer = 7 and String = "7". The result is a new String = 77
   

2. Java ngowahi int dadi string nggunakake Integer.toString(int)

   Kelas obyek minangka kelas root ing Jawa. Tegese saben kelas Jawa diwarisake langsung utawa ora langsung saka kelas Obyek lan kabeh metode kelas Obyek kasedhiya kanggo kabeh kelas Jawa.

   Obyek nduweni cara khusus toString () kanggo makili obyek minangka senar. Dadi, saben kelas Jawa uga marisi metode iki. Nanging, ide sing apik yaiku ngilangi metode iki ing kelas sampeyan supaya entuk asil sing cocog.

   Metode toString() kelas Integer ngasilake obyek String sing makili parameter int utawa Integer sing ditemtokake.

   Sintaksipun:

   
   public static String toString(int i)
   

   Cara ngowahi argumen i lan ngasilake minangka conto string. Yen nomer negatif, tandha bakal katahan.

   Tuladha:

   
   //  java integer to string using toString method
   
   public class Demo {
      public static void main(String[] args) {
   
          int x = -5;
          //  java convert int to string using Integer.toString
          String xText = Integer.toString(x);
          //  the result output
          System.out.println("convert int to String: " + xText);
          //  the int output
          System.out.println("our int: " + x);
          //  adding int and String gives the new String
          System.out.println("converting int = -5 and adding to String = \"-5\". The result is a new String = " + xText + Integer.toString(x));
   
   
      }
   }
   

   
   convert int to String: -5
   our int: -5
   converting int = -5 and adding to String = "-5". The result is a new String = -5-5
   

   Sampeyan bisa nggunakake cara toString kanggo ngowahi Integer (jinis pambungkus) uga.

   
   Integer number = -7;
   String numberAsString = Integer.toString(number);
   System.out.println("convert Integer to String: " + numberAsString);
   

   Hasile yaiku:

   Ngonversi Integer kanggo String: -7

   Sampeyan bisa nggunakake khusus Integer.toString method toString(int i, int base)sing ngasilake perwakilan senar saka nomer i karo basa basa lan saka String. Tuladhane Sintaksis yaiku: public static String toString(int i, int base) Punika conto: int a = 255; // binary String customString = Integer.toString(a, 2); System.out.println(customString); Output minangka representasi biner String saka angka desimal 255: 11111111

3. Ngonversi int dadi String nggunakake String.valueOf(int)

   Metode String.valueOf(int)ngasilake representasi string saka argumen int.

   Sintaks metode kasebut yaiku:

   
   public static String valueOf(int i)
   

   Ing ngisor iki conto Java convert int to String nggunakake String.valueOf(int):

   
   public class Demo {
      public static void main(String[] args) {
          int z = -5;
          //  Java int to String converting 
    String zText = String.valueOf(z); 
          //  the result output
          System.out.println("convert int to String: " + zText);
          //  the int output
          System.out.println("our int: " + z);
          //  adding int and String gives the new String
          System.out.println("converting int = -5 and adding to String = \"-5\". The result is a new String = " + zText + z);
      }
   }
   

   
   convert int to String: -5
   our int: -5
   converting int = -5 and adding to String = "-5". The result is a new String = -5-5
   

   Sampeyan bisa uga nindakake perkara sing padha karo Integer (jinis pambungkus int):

   
   Integer number = -7;
   String numberAsString = String.valueOf(number);
   System.out.println("convert Integer to String: " + numberAsString);
   

   Output bakal:

   Ngonversi Integer kanggo String: -7

4. Ngonversi nggunakake DecimalFormat

   java.text.DecimalFormatpunika kelas ditetepake ing java.textpaket lan subclass saka NumberFormat. Iki digunakake kanggo ngowahi format angka desimal menyang string sing nuduhake pola tartamtu. Kita uga bisa nggunakake kanggo Integers.

   Tuladha:

   
   import java.text.DecimalFormat;
   public class Demo {
      public static void main(String[] args) {
          int myNumber = 31415;
          DecimalFormat decimalFormat = new DecimalFormat("#");
          String myNumberAsString = decimalFormat.format(myNumber);
          System.out.println(myNumberAsString);
      }
   }
   

   Outpute yaiku:

   
   31415
   

5. Ngonversi nggunakake String.format()

   String.format () iku salah siji cara liyane kanggo ngowahi Integer kanggo String Obyek.

   Sintaksis

   
   public static String format(String format, Object... args)
   

   Tuladha

   
   public class Demo {
      public static void main(String[] args) {
          int myNumber = 35;
          String myNumberAsString = String.format("%d", myNumber);  //  %d converter defines a single decimal integer variable.
          System.out.println(myNumberAsString);
      }
   }
   

   Outpute yaiku:

   35