operators/Literals.java · ThisYoung/OnJava8-Examples

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OnJava8-Examples

operators

Literals.java

Literals.java 1.89 KB

// operators/Literals.java
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.

public class Literals {
 public static void main(String[] args) {
 int i1 = 0x2f; // Hexadecimal (lowercase)
 System.out.println(
 "i1: " + Integer.toBinaryString(i1));
 int i2 = 0X2F; // Hexadecimal (uppercase)
 System.out.println(
 "i2: " + Integer.toBinaryString(i2));
 int i3 = 0177; // Octal (leading zero)
 System.out.println(
 "i3: " + Integer.toBinaryString(i3));
 char c = 0xffff; // max char hex value
 System.out.println(
 "c: " + Integer.toBinaryString(c));
 byte b = 0x7f; // max byte hex value 10101111;
 System.out.println(
 "b: " + Integer.toBinaryString(b));
 short s = 0x7fff; // max short hex value
 System.out.println(
 "s: " + Integer.toBinaryString(s));
 long n1 = 200L; // long suffix
 long n2 = 200l; // long suffix (can be confusing)
 long n3 = 200;
 // Java 7 Binary Literals:
 byte blb = (byte)0b00110101;
 System.out.println(
 "blb: " + Integer.toBinaryString(blb));
 short bls = (short)0B0010111110101111;
 System.out.println(
 "bls: " + Integer.toBinaryString(bls));
 int bli = 0b00101111101011111010111110101111;
 System.out.println(
 "bli: " + Integer.toBinaryString(bli));
 long bll = 0b00101111101011111010111110101111;
 System.out.println(
 "bll: " + Long.toBinaryString(bll));
 float f1 = 1;
 float f2 = 1F; // float suffix
 float f3 = 1f; // float suffix
 double d1 = 1d; // double suffix
 double d2 = 1D; // double suffix
 // (Hex and Octal also work with long)
 }
}
/* Output:
i1: 101111
i2: 101111
i3: 1111111
c: 1111111111111111
b: 1111111
s: 111111111111111
blb: 110101
bls: 10111110101111
bli: 101111101011111010111110101111
bll: 101111101011111010111110101111
*/

一键复制编辑原始数据按行查看历史

Bruce Eckel 提交于 2017年05月11日 01:45 +08:00 . Narrowed listing widths, fixed output

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61

// operators/Literals.java
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.

public class Literals {
 public static void main(String[] args) {
 int i1 = 0x2f; // Hexadecimal (lowercase)
 System.out.println(
 "i1: " + Integer.toBinaryString(i1));
 int i2 = 0X2F; // Hexadecimal (uppercase)
 System.out.println(
 "i2: " + Integer.toBinaryString(i2));
 int i3 = 0177; // Octal (leading zero)
 System.out.println(
 "i3: " + Integer.toBinaryString(i3));
 char c = 0xffff; // max char hex value
 System.out.println(
 "c: " + Integer.toBinaryString(c));
 byte b = 0x7f; // max byte hex value 10101111;
 System.out.println(
 "b: " + Integer.toBinaryString(b));
 short s = 0x7fff; // max short hex value
 System.out.println(
 "s: " + Integer.toBinaryString(s));
 long n1 = 200L; // long suffix
 long n2 = 200l; // long suffix (can be confusing)
 long n3 = 200;
 // Java 7 Binary Literals:
 byte blb = (byte)0b00110101;
 System.out.println(
 "blb: " + Integer.toBinaryString(blb));
 short bls = (short)0B0010111110101111;
 System.out.println(
 "bls: " + Integer.toBinaryString(bls));
 int bli = 0b00101111101011111010111110101111;
 System.out.println(
 "bli: " + Integer.toBinaryString(bli));
 long bll = 0b00101111101011111010111110101111;
 System.out.println(
 "bll: " + Long.toBinaryString(bll));
 float f1 = 1;
 float f2 = 1F; // float suffix
 float f3 = 1f; // float suffix
 double d1 = 1d; // double suffix
 double d2 = 1D; // double suffix
 // (Hex and Octal also work with long)
 }
}
/* Output:
i1: 101111
i2: 101111
i3: 1111111
c: 1111111111111111
b: 1111111
s: 111111111111111
blb: 110101
bls: 10111110101111
bli: 101111101011111010111110101111
bll: 101111101011111010111110101111
*/