[問題] 字串中 "+" 的判斷
public class test {
public static void main(String[] args){
String s1 ="a + b";
String[] s2 =s1.split(" ");
for(int i=0 ;i<=s2.length-1 ;i++ ){
System.out.print(s2[i]+" ");
if(s2[i]=="+" )
System.out.println("1");
else
System.out.println("2");
}
}
}
console:
a 2
+ 2
b 2
有問題的在if那行
當i=1,為什麼s2[i]="+" 是false?
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