Исходный текст программы BaseType.java

Назад

// ==========================================
// BaseType.java
//(C) Alexandr Frolov, 1998
// E-mail: frolov@glasnet.ru
// Web:    http://www.glasnet.ru/~frolov 
// ==========================================

public class BaseTypes 
{
  public static void main(String args[]) 
  {
    // -----------------------------------
    // boolean
    // -----------------------------------
    System.out.println("* boolean *\n");    
    
    boolean fBooleanValue = true;
    
    if(fBooleanValue)
    {
      System.out.println(
        "Set fBooleanValue to 'false'");    
      
      fBooleanValue = false;
      System.out.println("fBooleanValue = " 
        + fBooleanValue);    
      
      // ERROR: Incompatible Type. 
      // Can't convert boolean to int
      // int i = fBooleanValue;
    }
    
    // -----------------------------------
    // byte
    // -----------------------------------
    System.out.println("\n* byte *\n");    

    byte bByteValue = 126;
    
    bByteValue += 1;
    System.out.println("bByteValue = " 
      + bByteValue);    
    
    bByteValue += 1;
    System.out.println("bByteValue = " 
      + bByteValue);    
    
    // -----------------------------------
    // char
    // -----------------------------------
    System.out.println("\n* char *\n");    
    
    char chCharValue = '*';
   
    System.out.println("chCharValue = " 
      + chCharValue);    
    
    chCharValue += 1;
    System.out.println("chCharValue = " 
      + chCharValue);    
    
    chCharValue = 0x0455;
    System.out.println("chCharValue = " 
      + chCharValue);    
    
    // -----------------------------------
    // short
    // -----------------------------------
    System.out.println("\n* short *\n");    
    
    short shShortValue = 32767;
    
    System.out.println("shShortValue = " 
      + shShortValue);    
    
    shShortValue +=2;
    System.out.println("shShortValue = " 
      + shShortValue);    
    
    shShortValue = (short)chCharValue;
    System.out.println("Value of chCharValue = " 
      + shShortValue);    
    
    // -----------------------------------
    // int
    // -----------------------------------
    System.out.println("\n* int *\n");    
    
    int iIntValue = 2147483647;

    System.out.println("iIntValue = " 
      + iIntValue);    
    
    iIntValue += 2;
    System.out.println("iIntValue = " 
      + iIntValue);    
    
    // -----------------------------------
    // long
    // -----------------------------------
    System.out.println("\n* long *\n");    
    
    long lLongValue = 9223372036854775807L;
    
    System.out.println("lLongValue = " 
      + lLongValue);    
    
    lLongValue += 1;
    System.out.println("lLongValue = " 
      + lLongValue);    
    
    // -----------------------------------
    // float
    // -----------------------------------
    System.out.println("\n* float *\n");    
    
    float flFloatValue = 526e-3F;
    
    System.out.println("flFloatValue = " 
      + flFloatValue);    
    
    flFloatValue /= 3;
    System.out.println("flFloatValue = " 
      + flFloatValue);    
    
    // -----------------------------------
    // double
    // -----------------------------------
    System.out.println("\n* double *\n");    
    
    double dblDoubleValue = 526E-3D;
    
    System.out.println("dblDoubleValue = " 
      + dblDoubleValue);    
    
    dblDoubleValue /= 3;
    System.out.println("dblDoubleValue = " 
      + dblDoubleValue);    

  }
}

Назад