如何在Java中清除或清空StringBuilder。
您可以将setLength设置为0或创建一个新StringBuilder()实例。请参阅下面的示例-
示例
public class Tester {
public static void main(String[] args) {
StringBuilder builder = new StringBuilder();
builder.append("sample");
System.out.println(builder.toString());
builder.setLength(0);
System.out.println(builder.toString());
builder.append("sample");
System.out.println(builder.toString());
}
}输出结果
sample sample