JavaUI简单计算器.docVIP

Java编程的简单计算器，只实现了部分功能 具体代码: 压缩包地址：/share/link?shareid=153637uk=3844075602 DoCompute.java package zf.calculator.Function; import java.text.DecimalFormat; import java.util.HashMap; public class DoCompute { public static String doBracket(String formula) throws Exception { //System.out.println(formula----- + formula); String str = formula.substring(1, formula.length()-1); //System.out.println(str---- + str); String answer = doCalculate(str); return answer; } public static String doCalculate(String formula) throws Exception { String answer = ; if (formula.endsWith(=)) { formula = formula.substring(0, formula.length()-1); System.out.println(formula.endsWith=--- + formula); } if (formula.matches(([-]?[1-9][0-9]*[.]?[0-9]*)|([-]?[0-9]?[0-9]*[.][0-9]*))) { if (Double.parseDouble(formula) 0) { answer = s + formula.substring(1, formula.length()-1); } else { answer = formula; } } else if (formula.matches([√][1-9][0-9]*[.]?[0-9]*)) { System.out.println(doCalculate----√); answer = getSqrtNum(formula); } else { answer = SimpleCalculate(formula); } return answer; } //算术平方根 private static String getSqrtNum(String formula) { formula = formula.substring(1, formula.length()); //保留1位小数 String answer = new DecimalFormat(#.00). format(Math.sqrt(Double.parseDouble(formula))) + ; return answer; } //6/(9*6)-(9/9)+((6-3)*(9/6)) public static String SimpleCalculate(String formula) throws Exception { formula = formula.trim(); System.out.println(SimpleCalculate--- + formula); HashMapInteger, String map = new HashMapInteger, String(); String ch[] = null; String num[] = null; if (formula.matches(([-]?[s]?[1-9][0-9]*[.]?[0-9]*)|([-]?[s]?[0-9]?[0-9]*[.][0-9]*))) { return formula; } else { ch = formula.split(([s]?[1-9][0-9]*[.]?[0-9]*)|([s]?[0-9]+[.][0-9]+)|([0])); num = formula.split([^1234567890.s]); StringBuffer sbch = new StringBuffer(); StringBuffer sbnum = new StringBuffer();