How to use ternary operator to optimize if-else in java

Use ternary operator to optimize if-else

1. Judge the assignment based on if-else conditions, such as:

String id="";
if(flag){
    id="a";
}else{
    id="b";
}

Use ternary operator symbol, it can be directly optimized into a line of code:

id=flag?"a":"b";

2. Use if-else conditions to determine the calling method, such as:

Set<String> set1=new HashSet<>();
Set<String> set2=new HashSet<>();

if(flag){
    set1.add(id);
}else{
    set2.add(id);
}

Use the ternary operator, you can Directly optimized to:

Set<String> set1=new HashSet<>();
Set<String> set2=new HashSet<>();
(flag?set1:set2).add(id);

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