「Java」setLengthメソッドで文字シーケンスの長さを設定する
説明
setLength(int newLength)
文字シーケンスの長さを設定します。
Javaコード
package com.arkgame.study; public class StringBuilderLengthDemo { public static void main(String[] args) { StringBuilder strA = new StringBuilder("arkgame"); System.out.println("string = " + strA); //length of StringBuilder System.out.println("length = " + strA.length()); //set the length of StringBuilder to 5 strA.setLength(5); //print new StringBuilder value after changing length System.out.println("After set, string = " + strA); //length of StringBuilder after changing length System.out.println("length = " + strA.length()); } }
結果
string = arkgame
length = 7
After set, string = arkga
length = 5