importjava.text.DecimalFormat;publicclassScientificNotationConverter{publicstaticvoidmain(String[]args){// Step 1: 定义一个double类型的变量doublenumber=123456789.123456;// Step 2: 使用String.format()方法转换为科学记数法字符串
另一种避免使用科学计数法的方法是使用String类的format方法,并指定格式化字符串的模式。 publicclassAvoidScientificNotationExample{publicstaticvoidmain(String[]args){doublenumber=1234567890.1234567890;StringformattedNumber=String.format("%.0f",number);System.out.println("Formatted number: "+formattedNumber);}} ...
这下可算是从苦逼的if else中解脱出来了,下面就记录几个常用的格式转换符: %s : 字符串,如"hello" %c : 字符,如'a' %b : 布尔类型,如true或者false %d : 十进制整型数,如119 %x : 十六进制整型数,如f0 %f : 十进制浮点数,java在这里不像c有%f/%lf/%ld等区分浮点与双精度,java的float类型和dou...
The Double class wraps a value of the primitive type double in an object. An object of type Double contains a single field whose type is double. In addition, this class provides several methods for converting a double to a String and a String to a double, as well as other constants ...
Returns a string representation of thedoubleargument. C# [Android.Runtime.Register("toString","(D)Ljava/lang/String;","")]publicstaticstringToString(doubled); Parameters d Double thedoubleto be converted. Returns String a string representation of the argument. ...
Each input contains one test case. For each case, there is one line containing the real numberA in scientific notation. The number is no more than 9999 bytes in length and the exponent's absolute value is no more than 9999. Output Specification: ...
This method translates a double into a BigDecimal, using the double's canonical string representation provided by the Double.toString(double) method. 59static BigDecimal valueOf(long val) This method translates a long value into a BigDecimal with a scale of zero. ...
Integral - may be applied to Java integral types: byte, Byte, short, Short, int and Integer, long, Long, and BigInteger (but not char or Character) Floating Point - may be applied to Java floating-point types: float, Float, double, Double, and BigDecimal Date/Time - may be applied...
double value = 4.2352989244d; assertthat(string.format("%.2f", value)).isequalto("4.24"); assertthat(string.format("%.3f", value)).isequalto("4.235"); 3. decimal formatting by rounding in java, we have two primitive types that represent decimal numbers, float and decimal ...
Sometimes, we need to format very large or very small numbers using scientific notation. We can use theString.format()method to convert a double value into scientific notation efficiently: publicstaticStringformatScientificNotation(doublevalue, Locale localisation){returnString.format(localisation,"%.3E...