String -->int:Integer.parseInt(String)
String-->double:Double.parseDouble(String)
double-->String:String.valueOf(double),double+""
String-->double:Double.parseDouble(String)
double-->String:String.valueOf(double),double+""
把double转换成String:String s = String.valueOf(double d);
String -->int:int i = Integer.parseInt(String s);
String -->double:int i = Double.parseDouble(String s);
Integer i ;
public void aa(){
String aa = i.toString();
int ii = Integer.parseInt(aa);
double dd = Double.parseDouble(aa);
String ss = new Double(dd).toString();
}
}
A.parseA(String)反过来,用String.valueOf(A) //这里的A是任何的简单类型!参考API就知道了!