Question

纯新手救助一个JAVA书上列子运行报错的问题

package asb;
public class Arith {
public static void main(String[]args){
float number1=45.56f;
int number2=152;
System.out.println("和为：",number1+number2);
System.out.println("差为：",(number1+number2));
System.out.println("积为：",number1*number2);
System.out.println("商为：",number1/number2);
}

}

这个代码运行报错：Exception in thread "main" java.lang.Error: Unresolved compilation problems:
The method println(float) in the type PrintStream is not applicable for the arguments (String, float)
The method println(float) in the type PrintStream is not applicable for the arguments (String, float)
The method println(float) in the type PrintStream is not applicable for the arguments (String, float)
The method println(float) in the type PrintStream is not applicable for the arguments (String, float)
请问是哪里出错了呢

Answer 1

把下面四句代码中的逗号改为号，System.out.println这个函数，参数如果是有几个的话，要用加号连接
System.out.println("和为："+number1+number2);
System.out.println("差为："+(number1+number2));
System.out.println("积为："+number1*number2);
System.out.println("商为："+number1/number2);

Answer 2

很明显的错误啊，字符串不能这样和数字连接，你把逗号去掉，换成+号就行了，有问题请追问，没问题请采纳

Answer 3

System.out.println("和为：",number1+number2);

要在打印信息内加入占位符
System.out.println("和为：{0}",number1+number2);

追问

应该不是这个问题，改过之后连报错都没变化