в 17:43, 31 мая 2010

2010-05-31T17:43:48Z

Admin: 1 версия

2010-05-31T14:40:41Z

1 версия

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== Double: byteValue() ==



<source lang="java">

public class Main {
public static void main(String[] args) {
Double dObj = new Double("10.50");
byte b = dObj.byteValue();
System.out.println(b);
short s = dObj.shortValue();
System.out.println(s);
int i = dObj.intValue();
System.out.println(i);
float f = dObj.floatValue();
System.out.println(f);
double d = dObj.doubleValue();
System.out.println(d);
}
}
/*
10
10
10
10.5
10.5
*/

</source>



== Double: compare(double d1, double d2) ==



<source lang="java">

public class Main {
public static void main(String[] args) {
double d1 = 5.5;
double d2 = 5.4;
int i1 = Double.rupare(d1, d2);
if (i1 > 0) {
System.out.println(">");
} else if (i1 < 0) {
System.out.println("<");
} else {
System.out.println("=");
}
Double dObj1 = new Double("5.5");
Double dObj2 = new Double("5.4");
int i2 = dObj1.rupareTo(dObj2);
if (i2 > 0) {
System.out.println(">");
} else if (i2 < 0) {
System.out.println("<");
} else {
System.out.println("=");
}
}
}

</source>



== Double: compareTo(Double anotherDouble) ==



<source lang="java">

public class Main {
public static void main(String[] args) {
double d1 = 5.5;
double d2 = 5.4;
int i1 = Double.rupare(d1, d2);
if (i1 > 0) {
System.out.println(">");
} else if (i1 < 0) {
System.out.println("<");
} else {
System.out.println("=");
}
Double dObj1 = new Double("5.5");
Double dObj2 = new Double("5.4");
int i2 = dObj1.rupareTo(dObj2);
if (i2 > 0) {
System.out.println(">");
} else if (i2 < 0) {
System.out.println("<");
} else {
System.out.println("=");
}
}
}

</source>



== Double: doubleValue() ==



<source lang="java">

/*
* Output:

10.234
*/
public class MainClass {
public static void main(String args[]) {
double degrees = Double.valueOf("10.234").doubleValue();
System.out.println(degrees);
}
}

</source>



== Double: equals ==



<source lang="java">

/*
* Output:
3.14159 = 3.14159 -> true
*

*/
public class MainClass {
public static void main(String args[]) {
Double d1 = new Double(3.14159);
Double d2 = new Double("314159E-5");
System.out.println(d1 + " = " + d2 + " -> " + d1.equals(d2));
}
}

</source>



== Double: floatValue() ==



<source lang="java">

public class Main {
public static void main(String[] args) {
Double dObj = new Double("10.50");
byte b = dObj.byteValue();
System.out.println(b);
short s = dObj.shortValue();
System.out.println(s);
int i = dObj.intValue();
System.out.println(i);
float f = dObj.floatValue();
System.out.println(f);
double d = dObj.doubleValue();
System.out.println(d);
}
}
/*
10
10
10
10.5
10.5
*/

</source>



== Double: intValue() ==



<source lang="java">

public class Main {
public static void main(String[] args) {
Double dObj = new Double("10.50");
byte b = dObj.byteValue();
System.out.println(b);
short s = dObj.shortValue();
System.out.println(s);
int i = dObj.intValue();
System.out.println(i);
float f = dObj.floatValue();
System.out.println(f);
double d = dObj.doubleValue();
System.out.println(d);
}
}
/*
10
10
10
10.5
10.5
*/

</source>



== Double: isInfinite() ==



<source lang="java">

/*
* Output:
*
Infinity: true, false
NaN: false, true
*
*/
public class MainClass {
public static void main(String args[]) {
Double d1 = new Double(1/0.);
Double d2 = new Double(0/0.);
System.out.println(d1 + ": " + d1.isInfinite() + ", " + d1.isNaN());
System.out.println(d2 + ": " + d2.isInfinite() + ", " + d2.isNaN());
}
}

</source>



== Double: isNaN() ==



<source lang="java">

/*
* Output:
*
Infinity: true, false
NaN: false, true
*
*/
public class MainClass {
public static void main(String args[]) {
Double d1 = new Double(1/0.);
Double d2 = new Double(0/0.);
System.out.println(d1 + ": " + d1.isInfinite() + ", " + d1.isNaN());
System.out.println(d2 + ": " + d2.isInfinite() + ", " + d2.isNaN());
}
}

</source>



== Double.MAX_VALUE ==



<source lang="java">

/*
* Output:

1.7976931348623157E308
*/
public class MainClass {
public static void main(String args[]) {
System.out.println(Double.MAX_VALUE);
}
}

</source>



== Double.MIN_VALUE ==



<source lang="java">

/*
* Output:

4.9E-324
*/
public class MainClass {
public static void main(String args[]) {
System.out.println(Double.MIN_VALUE);
}
}

</source>



== Double.NEGATIVE_INFINITY ==



<source lang="java">

/*
* Output:

-Infinity
*/
public class MainClass {
public static void main(String args[]) {
System.out.println(Double.NEGATIVE_INFINITY);
}
}

</source>



== Double: parseDouble(String s) ==



<source lang="java">

public class Main {
public static void main(String[] argv) throws Exception {
double d = Double.parseDouble("123.4e10");
System.out.println(d);
}
}

</source>



== Double.POSITIVE_INFINITY ==



<source lang="java">

/*
* Output:

Infinity
*/
public class MainClass {
public static void main(String args[]) {
System.out.println(Double.POSITIVE_INFINITY);
}
}

</source>



== Double: shortValue() ==



<source lang="java">

public class Main {
public static void main(String[] args) {
Double dObj = new Double("10.50");
byte b = dObj.byteValue();
System.out.println(b);
short s = dObj.shortValue();
System.out.println(s);
int i = dObj.intValue();
System.out.println(i);
float f = dObj.floatValue();
System.out.println(f);
double d = dObj.doubleValue();
System.out.println(d);
}
}
/*
10
10
10
10.5
10.5
*/

</source>



== Double: toString(double d) ==



<source lang="java">

public class Main {
public static void main(String[] args) {
double d = 8.48;
String s = Double.toString(d);
}
}

</source>



== Double: valueOf(String stringValue) ==



<source lang="java">

/*
* Output:

10.234
*/
public class MainClass {
public static void main(String args[]) {
double degrees = Double.valueOf("10.234").doubleValue();
System.out.println(degrees);
}
}

</source>



== new Double(double value) ==



<source lang="java">

/*
* Output:
3.14159 = 3.14159 -> true
*

*/
public class MainClass {
public static void main(String args[]) {
Double d1 = new Double(3.14159);
Double d2 = new Double("314159E-5");
System.out.println(d1 + " = " + d2 + " -> " + d1.equals(d2));
}
}

</source>



== new Double(String stringValue) "-5" ==



<source lang="java">

/*
* Output:
3.14159 = 3.14159 -> true
*

*/
public class MainClass {
public static void main(String args[]) {
Double d1 = new Double(3.14159);
Double d2 = new Double("314159E-5");
System.out.println(d1 + " = " + d2 + " -> " + d1.equals(d2));
}
}

</source>

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в 17:43, 31 мая 2010

Admin: 1 версия