importjava.math.BigDecimal;publicclassStringToDecimalConverter{publicstaticBigDecimalconvert(Stringstr)throwsIllegalArgumentException{// 去除前后空格if(str==null||str.trim().isEmpty()){thrownewIllegalArgumentException("Input string is null or empty");}// 正则表达式验证数字格式if(!str.trim().matches("...
importjava.math.BigDecimal;publicclassStringToDecimalConverter{publicstaticBigDecimalconvertStringToDecimal(Stringvalue)throwsNumberFormatException{if(value==null||value.isEmpty()){thrownewNumberFormatException("输入不能为空");}try{BigDecimaldecimalValue=newBigDecimal(value);returndecimalValue;}catch(NumberFormat...
在上述代码中,convertStringToDecimal方法接收一个字符串参数str,并使用BigDecimal的构造函数直接将其转换为BigDecimal对象。这个构造函数会抛出NumberFormatException异常,如果输入的字符串不是一个有效的十进制数表示。 4. 测试转换功能 为了确保转换功能的正确性,可以进行以下测试: 测试正常的十进制数字符串,如"123.456"。
public static BigDecimal convertStringtoDecimal(String patternDecimalFormat, String pattern, String price) { DecimalFormatSymbols symbols = new DecimalFormatSymbols(); symbols.setDecimalSeparator(pattern.charAt(0)); symbols.setGroupingSeparator(pattern.charAt(1)); DecimalFormat decimalFormat = new DecimalFormat(...
3.BigDecimal(String) The easiest way to convertStringtoBigDecimalin Java is to useBigDecimal(String)constructor: BigDecimalbigDecimal=newBigDecimal("123"); assertEquals(newBigDecimal(123), bigDecimal); 4.BigDecimal.valueOf() We can also convertStringtoBigDecimalby using theBigDecimal.valueOf(double)meth...
private String convertInt(String number, boolean hasDecimal) throws Exception { if("0".equals(number)) { return ""; } StringBuffer sb = new StringBuffer(); //以8位为单位处理数字 int maxProcessUnit = 8; //整数部分金额长度 int len = number.length(); ...
In general,we should favorDouble.parseDoublesince it does not require the compiler to perform auto-unboxing. 4.DecimalFormat.parse When aStringrepresenting adoublehas a more complex format, we can use aDecimalFormat. For example, we can convert a decimal-based currency value without removing non-...
Stringhex=convertToHex(269);System.out.println(hex);// '10D' 4. Converting a Hexadecimal Number to Decimal 4.1. Using Number Classes Converting from hexadecimal strings to Java Number types is easy if converting toIntegerandLongtypes. There is direct API support for such conversion: ...
ThetoString()method is used to convertBigDecimaltoString. It is available in the java class that extends thejava.lang.objectclass. It returns the string number as String output. Syntax: BigDecimal.toString() code: MathContextm=newMathContext(3);BigDecimalbg=newBigDecimal("3617E+4",m);System.ou...
The IP address is “base 256”, to convert 192.168.1.2 to decimal (base 10) the formula is:Bash 192 x (256)^3 + 168 x (256)^2 + 1 x (256)^1 + 2 (256)^0 = ? 3221225472 + 11010048 + 256 + 2 = 3232235778 Java public long ipToLong(String ipAddress) { String[] ip...