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1.ÌṩÁËvalueOf(String)ÓÃÓÚ´Ó×Ö·û´®×ª»»¼°toString()ת»»³É×Ö·û´®
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public class DoubleAndString {
public static void main(String[] args) {
double d;
String s;
System.out.println("===Change double to String===");
d = 3.1415926;// double d
s = "" + d;// this is a interesting convert way
System.out.println("s is " + s);
s = new Double(d).toString();// toString(String) method
System.out.println("s is " + s);
s = String.valueOf(d);// valueOf(String) method
System.out.println("s is " + s);
System.out.println("===change String to double===");
s = "6.12345";
try {
d = new Double(s).doubleValue();//xxxValue() method
System.out.println("d is " + d);
//Returns a new double initialized to the value represented
//by the specified String
d = Double.parseDouble(s);
System.out.println("d is " + d);
d = Double.valueOf(s).doubleValue();//doubleValue() method
System.out.println("d is " + d);
} catch (Exception e) {
e.printStackTrace();
}
}
}
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