int a = 1;
int b = 2;
String c = "3";
String d = "4";
a&b 12 将AB连接起来结果为数字类型 b&c 23 连接出来如果转成数字a+b 3转换成字符
c+d 7转换成数字知道的告诉我一下谢了
int b = 2;
String c = "3";
String d = "4";
a&b 12 将AB连接起来结果为数字类型 b&c 23 连接出来如果转成数字a+b 3转换成字符
c+d 7转换成数字知道的告诉我一下谢了
b&c new Integer(c+b).intValue()a+b new Integer(a+b).toString()
c+d nwe String(new Integer(c).toString+new Integer(d).toString)
Integer.parseInt(b+c)
String.valueOf(a+b)
Integer.parseInt(b)+Integer.parseInt(c)
int b = 2;
String c = "3";
String d = "4";
System.out.println("a&b="+Integer.toString(a)+Integer.toString(b));
System.out.println("b&c="+Integer.valueOf((b+c)));
System.out.println("a+b="+Integer.toString((a+b)));
System.out.println("c+d="+(Integer.valueOf(c)+Integer.valueOf(d)));
int b = 2;
String c = "3";
String d = "4";
a&b 12 将AB连接起来结果为数字类型
int result1=a*10+b
b&c 23 连接出来如果转成数字
c=Integer.parseInt("c");//将字符串c转换成Integer类型
int result2=a*10+c;a+b 3转换成字符
int ab=a+b;
String result3=ab.toString();
c+d 7转换成数字
int result=Integer.parseInt("c")+Integer.parseInt("d")
int b = 2;
String c = "3";
String d = "4";
System.out.println(Integer.parseInt(a+""+b));
System.out.println(Integer.parseInt(b+c));
System.out.println(Integer.parseInt((a+b)+"3"));
System.out.println((Integer.valueOf(c)+Integer.valueOf(d))+"7");
//这是你要的结果吗?
这样你应该清楚了
public static void main(String[]args){
int a = 1,b = 2;
String c = "3",d = "4";
int abtono = Integer.parseInt(Integer.toString(a)+Integer.toString(b));
int bctono = Integer.parseInt(Integer.toString(b)+c);
String ab = Integer.toString(a+b);
int cd = Integer.parseInt(c)+Integer.parseInt(d);
System.out.println("a & b = "+abtono);
System.out.println("b & c = "+bctono);
System.out.println("a + b = "+ab);
System.out.println("c + d = "+cd); }
}
{
public static void main(String[] args)
{
int a = 1;
int b = 2;
String c = "3";
String d = "4";
int n1 = Integer.parseInt((String.valueOf(a) + String.valueOf(b)));
System.out.println("a&b = " + n1);
int n2 = Integer.parseInt(b + c);
System.out.println("b&c = " + n2);
String n3 = "" + (a + b);
System.out.println("a + b = " + n3);
int n4 = Integer.parseInt(c) + Integer.parseInt(d);
System.out.println("c + d = " + n4);
}
}