WEB开发网
开发学院WEB开发Jsp Java运算符总结 阅读

Java运算符总结

 2008-01-05 09:51:59 来源:WEB开发网   
核心提示:运算符总结下面这个例子向大家展示了如何随同特定的运算符使用主数据类型,从根本上说,Java运算符总结,它是同一个例子反反复复地执行,只是使用了不同的主数据类型,文件编译时不会报错,因为那些会导致错误的行已用//!变成了注释内容

  运算符总结
  下面这个例子向大家展示了如何随同特定的运算符使用主数据类型。从根本上说,它是同一个例子反反复复地执行,只是使用了不同的主数据类型。文件编译时不会报错,因为那些会导致错误的行已用//!变成了注释内容。
  //: AllOps.java
  // Tests all the Operators on all the
  // PRimitive data types to show which
  // ones are accepted by the Java compiler.
  
  class AllOps {
   // To accept the results of a boolean test:
   void f(boolean b) {}
   void boolTest(boolean x, boolean y) {
    // Arithmetic operators:
    //! x = x * y;
    //! x = x / y;
    //! x = x % y;
    //! x = x + y;
    //! x = x - y;
    //! x++;
    //! x--;
    //! x = +y;
    //! x = -y;
    // Relational and logical:
    //! f(x > y);
    //! f(x >= y);
    //! f(x < y);
    //! f(x < = y);
    f(x == y);
    f(x != y);
    f(!y);
    x = x && y;
    x = x y;
    // Bitwise operators:
    //! x = ~y;
    x = x & y;
    x = x y;
    x = x ^ y;
    //! x = x < < 1;
    //! x = x >> 1;
    //! x = x >>> 1;
    // Compound assignment:
    //! x += y;
    //! x -= y;
    //! x *= y;
    //! x /= y;
    //! x %= y;
    //! x < < = 1;
    //! x >>= 1;
    //! x >>>= 1;
    x &= y;
    x ^= y;
    x = y;
    // Casting:
    //! char c = (char)x;
    //! byte B = (byte)x;
    //! short s = (short)x;
    //! int i = (int)x;
    //! long l = (long)x;
    //! float f = (float)x;
    //! double d = (double)x;
   }
   void charTest(char x, char y) {
    // Arithmetic operators:
    x = (char)(x * y);
    x = (char)(x / y);
    x = (char)(x % y);
    x = (char)(x + y);
    x = (char)(x - y);
    x++;
    x--;
    x = (char)+y;
    x = (char)-y;
    // Relational and logical:
    f(x > y);
    f(x >= y);
    f(x < y);
    f(x < = y);
    f(x == y);
    f(x != y);
    //! f(!x);
    //! f(x && y);
    //! f(x y);
    // Bitwise operators:
    x= (char)~y;
    x = (char)(x & y);
    x = (char)(x y);
    x = (char)(x ^ y);
    x = (char)(x < < 1);
    x = (char)(x >> 1);
    x = (char)(x >>> 1);
    // Compound assignment:
    x += y;
    x -= y;
    x *= y;
    x /= y;
    x %= y;
    x < < = 1;
    x >>= 1;
    x >>>= 1;
    x &= y;
    x ^= y;
    x = y;
    // Casting:
    //! boolean b = (boolean)x;
    byte B = (byte)x;
    short s = (short)x;
    int i = (int)x;
    long l = (long)x;
    float f = (float)x;
    double d = (double)x;
   }
   void byteTest(byte x, byte y) {
    // Arithmetic operators:
    x = (byte)(x* y);
    x = (byte)(x / y);
    x = (byte)(x % y);
    x = (byte)(x + y);
    x = (byte)(x - y);
    x++;
    x--;
    x = (byte)+ y;
    x = (byte)- y;
    // Relational and logical:
    f(x > y);
    f(x >= y);
    f(x < y);
    f(x < = y);
    f(x == y);
    f(x != y);
    //! f(!x);
    //! f(x && y);
    //! f(x y);
    // Bitwise operators:
    x = (byte)~y;
    x = (byte)(x & y);
    x = (byte)(x y);
    x = (byte)(x ^ y);
    x = (byte)(x < < 1);
    x = (byte)(x >> 1);
    x = (byte)(x >>> 1);
    // Compound assignment:
    x += y;
    x -= y;
    x *= y;
    x /= y;
    x %= y;
    x < < = 1;
    x >>= 1;
    x >>>= 1;
    x &= y;
    x ^= y;
    x = y;
    // Casting:
    //! boolean b = (boolean)x;
    char c = (char)x;
    short s = (short)x;
    int i = (int)x;
    long l = (long)x;
    float f = (float)x;
    double d = (double)x;
   }
   void shortTest(short x, short y) {
    // Arithmetic operators:
    x = (short)(x * y);
    x = (short)(x / y);
    x = (short)(x % y);
    x = (short)(x + y);
    x = (short)(x - y);
    x++;
    x--;
    x = (short)+y;
    x = (short)-y;
    // Relational and logical:
    f(x > y);
    f(x >= y);
    f(x < y);
    f(x < = y);
    f(x == y);
    f(x != y);
    //! f(!x);
    //! f(x && y);
    //! f(x y);
    // Bitwise operators:
    x = (short)~y;
    x = (short)(x & y);
    x = (short)(x y);
    x = (short)(x ^ y);
    x = (short)(x < < 1);
    x = (short)(x >> 1);
    x = (short)(x >>> 1);
    // Compound assignment:
    x += y;
    x -= y;
    x *= y;
    x /= y;
    x %= y;
    x < < = 1;
    x >>= 1;
    x >>>= 1;
    x &= y;
    x ^= y;
    x = y;
    // Casting:
    //! boolean b = (boolean)x;
    char c = (char)x;
    byte B = (byte)x;
    int i = (int)x;
    long l = (long)x;
    float f = (float)x;
    double d = (double)x;
   }
   void intTest(int x, int y) {
    // Arithmetic operators:
    x = x * y;
    x = x / y;
    x = x % y;
    x = x + y;
    x = x - y;
    x++;
    x--;
    x = +y;
    x = -y;
    // Relational and logical:
    f(x > y);
    f(x >= y);
    f(x < y);
    f(x < = y);
    f(x == y);
    f(x != y);
    //! f(!x);
    //! f(x && y);
    //! f(x y);
    // Bitwise operators:
    x = ~y;
    x = x & y;
    x = x y;
    x = x ^ y;
    x = x < < 1;
    x = x >> 1;
    x = x >>> 1;
    // Compound assignment:
    x += y;
    x -= y;
    x *= y;
    x /= y;
    x %= y;
    x < < = 1;
    x >>= 1;
    x >>>= 1;
    x &= y;
    x ^= y;
    x = y;
    // Casting:
    //! boolean b = (boolean)x;
    char c = (char)x;
    byte B = (byte)x;
    short s = (short)x;
    long l = (long)x;
    float f = (float)x;
    double d = (double)x;
   }
   void longTest(long x, long y) {
    // Arithmetic operators:
    x = x * y;
    x = x / y;
    x = x % y;
    x = x + y;
    x = x - y;
    x++;
    x--;
    x = +y;
    x = -y;
    // Relational and logical:
    f(x > y);
    f(x >= y);
    f(x < y);
    f(x < = y);
    f(x == y);
    f(x != y);
    //! f(!x);
    //! f(x && y);
    //! f(x y);
    // Bitwise operators:
    x = ~y;
    x = x & y;
    x = x y;
    x = x ^ y;
    x = x < < 1;
    x = x >> 1;
    x = x >>> 1;
    // Compound assignment:
    x += y;
    x -= y;
    x *= y;
    x /= y;
    x %= y;
    x < < = 1;
    x >>= 1;
    x >>>= 1;
    x &= y;
    x ^= y;
    x = y;
    // Casting:
    //!

Tags:Java 运算符 总结

编辑录入:爽爽 [复制链接] [打 印]
赞助商链接