Job 5.1

ImportJava.text.DecimalFormat;ImportJava.util.Scanner; Public classZhidao { Public Static voidMain (string[] args) {Scanner Scanner=NewScanner (system.in); Try{System.out.print ("Please enter the first number:"); Doublex =scanner.nextdouble (); System.out.print ("Please enter a second number:"); Doubley =scanner.nextdouble (); System.out.print ("Please enter operator:"); String s=Scanner.next (); Charz = S.charat (0);        Js.yunsuan (x, y, z); } Catch(Exception e) {System.out.println ("Please enter the correct data!" "); }    }}ImportJava.text.DecimalFormat; Public classJS { Public Static voidYunsuan (DoubleXDoubley, Character z) {DecimalFormat R=NewDecimalFormat (); R.applypattern ("#0.00"); if(Z.equals (' + ')) {System.out.println (x+ "+" + y + "=" + r.format (x +( y))); } Else if(Z.equals ('-')) {System.out.println (x+ "-" + y + "=" + R.format (X-( y))); } Else if(Z.equals (' * ')) {System.out.println (x+ "*" + y + "=" + R.format (x *( y))); } Else if(Z.equals ('/'))) {            if(y = = 0) {System.out.println ("Dividend cannot be 0"); } Else{System.out.println (x+ "/" + y + "=" + R.format ((X/( y))); }        } Else{System.out.println ("Change operator not recognized"); }    }}


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Job 5.1