However, if the concatenation creates a double-char,. * then omit one of the chars, so "abc" and "cat" yields "abcat". */. public String conCat(String a, ... ... <看更多>

Java Programming: Concatenating Strings in Java ProgrammingTopics discussed:1. Concatenating Strings using +2 ... More examples of concat (). ... <看更多>

If a is null , then a.concat(b) throws a NullPointerException but a+=b will treat ... String); Code: 0: new #2; //class java/lang/StringBuilder 3: dup 4: ... ... <看更多>