Java 中的 append 方法是什麼?
java.lang.StringBuffer 的 append(char c) 方法會將 char 引數的字串表示形式追加到該序列中。該引數會追加到該序列的內容中。該序列的長度會增加 1。
示例
import java.lang.*;
public class StringBufferDemo {
public static void main(String[] args) {
StringBuffer buff = new StringBuffer("tuts ");
System.out.println("buffer = " + buff);
// appends the char argument as string to the string buffer.
buff.append('A');
// print the string buffer after appending
System.out.println("After append = " + buff);
buff = new StringBuffer("abcd ");
System.out.println("buffer = " + buff);
// appends the char argument as string to the string buffer.
buff.append('!');
// print the string buffer after appending
System.out.println("After append = " + buff);
}
}輸出
buffer = tuts After append = tuts A buffer = abcd After append = abcd !
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