-java.lang.Mathstatic intMath.abs(int);the absolute valuestatic longMath.abs(long);the absolute valuestatic floatMath.abs(float);the absolute valuestatic doubleMath.abs(double);the absolute valuestatic doubleMath.cos(double);the cosine value, the argument is a radian valuestatic doubleMath.sin(double);the sine value, the argument is a radian valuestatic doubleMath.tan(double);the tangent value, the argment is a radian valuestatic doubleMath.log(double);the natural logarithm valuestatic doubleMath.exp(double);the exponential valuestatic doubleMath.log10(double);the base 10 logarithm valuestatic doubleMath.pow(double);the power valuestatic intMath.min(int, int);the minimum valuestatic longMath.min(long, long);the minimum valuestatic floatMath.min(float, float);the minimum valuestatic doubleMath.min(double, double);the minimum valuestatic intMath.max(int, int);the maximum valuestatic longMath.max(long, long);the maximum valuestatic floatMath.max(float, float);the maximum valuestatic doubleMath.max(double, double);the maximum valuestatic doubleMath.random();a random double value between 0 and 1static longMath.round(double);the round value of a double valuestatic intMath.round(float);the round value of a double valuestatic doubleMath.sqrt(double);the square value--------------------------------------------------------------------------------------------java.lang.Byteconstructor ByteByte(byte);bytebyteValue();the byte valueintintValue();the int valuelonglongValue();the long valuefloatfloatValue();the float valuedoubledoubleValue();the double valuestatic byteByte.parseByte(String);the byte value of the StringbytevalueOf(String);StringtoString();--------------------------------------------------------------------------------------------java.lang.IntegerIntegerInteger(int);bytebyteValue();the byte valueintintValue();the int valuelonglongValue();the long valuefloatfloatValue();the float valuedoubledoubleValue();the double valuestatic intInteger.parseInt(String);the int value of the StringintvalueOf(String);StringtoString();--------------------------------------------------------------------------------------------java.lang.Longconstructor LongLong(long);bytebyteValue();the byte valueintintValue();the int valuelonglongValue();the long valuefloatfloatValue();the float valuedoubledoubleValue();the double valuestatic longLong.parseLong(String);longvalueOf(String);StringtoString();--------------------------------------------------------------------------------------------java.lang.Floatconstructor FloatFloat(float);bytebyteValue();the byte valueintintValue();the int valuelonglongValue();the long valuefloatfloatValue();the float valuedoubledoubleValue();the double valuestatic floatFloat.parseFloat(String);floatvalueOf(String);StringtoString();--------------------------------------------------------------------------------------------java.lang.Doubleconstructor DoubleDouble(double);bytebyteValue();the byte valueintintValue();the int valuelonglongValue();the long valuefloatfloatValue();the float valuedoubledoubleValue();the double valuestatic doubleDouble.parseDouble(String);doublevalueOf(String);StringtoString();--------------------------------------------------------------------------------------------java.lang.Shortconstructor ShortShort(short);shortshortValue();static shortShort.parseShort(String);shortvalueOf(String);StringtoString();--------------------------------------------------------------------------------------------java.lang.Booleanconstructor BooleanBoolean(boolean);booleanbooleanValue();static booleanBoolean.parseBoolean(String);booleanvalueOf(String);StringtoString();--------------------------------------------------------------------------------------------java.lang.Characterconstructor CharacterCharacter(char);charcharOf(String);StringtoString();--------------------------------------------------------------------------------------------java.math.BigDecimalconstructor BigDecimalBigDecimal(int);constructor BigDecimalBigDecimal(long);constructor BigDecimalBigDecimal(float);constructor BigDecimalBigDecimal(double);constructor BigDecimalBigDecimal(String);intintValue();longlongValue();floatfloatValue();doubledoubleValue();StringtoString();BigDecimaladd(BigDecimal);BigDecimalsubtract(BigDecimal);BigDecimalmultiply(BigDecimal);BigDecimaldivide(BigDecimal);--------------------------------------------------------------------------------------------java.text.NumberForamtstatic StringNumberFormat.format(int);static StringNumberFormat.format(long);static StringNumberFormat.format(float);static StringNumberFormat.format(double);static StringNumberFormat.format(long);static NumberFormatNumberFormat.getCurrencyInstance();static NumberFormatNumberFormat.getCurrencyInstance(java.util.Locale);static NumberFormatNumberFormat.getPercentInstance();static NumberFormatNumberFormat.getPercentInstance(java.util.Locale);static NumberFormatNumberFormat.getNumberInstance();static NumberFormatNumberFormat.getNumberInstance(java.util.Locale);static voidNumberFormat.setMinimumFractionDigits(int);static voidNumberFormat.setMaximumFractionDigits(int);--------------------------------------------------------------------------------------------java.text.DecimalFormat extends NumberFormatHow to use "000,000"?How to use "#"?--------------------------------------------------------------------------------------------java.util.Localestatic LocaleCANADAstatic LocaleCHINAstatic LocaleFRANCEstatic LocaleGERMANYstatic LocaleITALYstatic LocaleJAPANstatic LocaleKOREAstatic LocalePRCstatic LocaleTAIWANstatic LocaleUKstatic LocaleUS
Extends java. util. scannerconstructor extends (inputstream) Boolean hasnext () string next () Static integer parseint (string) Static long parselong (string) Static double
Parsedouble (string)