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1. substring(int beginIndex) 锛氳繑鍥炰粠鎸囧畾绱㈠紩寮€濮嬪埌瀛楃涓叉湯灏剧殑瀛愬瓧绗︿覆銆?/li>
2. substring(int beginIndex, int endIndex) 锛氳繑鍥炰粠鎸囧畾绱㈠紩寮€濮嬪埌鎸囧畾绱㈠紩缁撴潫鐨勫瓙瀛楃涓层€?/li>

涓嬮潰鏄袱绉嶄娇鐢ㄦ柟寮忕殑绀轰緥锛?/p>

1. 浣跨敤substring(int beginIndex)鏂规硶锛?/li>

String str = "Hello, World!";
String subStr = str.substring(7); // 浠庣储寮?寮€濮嬫彁鍙栧瓙瀛楃涓?/span>
System.out.println(subStr); // 杈撳嚭 "World!"

2. 浣跨敤substring(int beginIndex, int endIndex)鏂规硶锛?/li>

String str = "Hello, World!";
String subStr = str.substring(7, 12); // 浠庣储寮?寮€濮嬪埌绱㈠紩12缁撴潫鎻愬彇瀛愬瓧绗︿覆
System.out.println(subStr); // 杈撳嚭 "World"

闇€瑕佹敞鎰忕殑鏄紝绱㈠紩鏄粠0寮€濮嬬殑锛屾墍浠ョ涓€涓瓧绗︾殑绱㈠紩涓?锛屾渶鍚庝竴涓瓧绗︾殑绱㈠紩涓哄瓧绗︿覆闀垮害鍑?銆傚鏋滄寚瀹氱殑绱㈠紩瓒呭嚭浜嗗瓧绗︿覆鐨勮寖鍥达紝灏嗕細鎶涘嚭IndexOutOfBoundsException寮傚父銆?/p>