只有一个参数的: String str = new String("ABCD"); System.out.println("str="+str.substring(1)); 进入substring() public String substring(int beginIndex) { if (beginIndex < 0) { throw new StringIndexOutOfBoundsException(beginIndex); } int subLen
1.subString()方法的作用 subString(int beginIndex, int endIndex)方法的返回的是以beginIndex开始到 endIndex-1结束的某个调用字符串. String x = "abcdef"; x = x.substring(1,3); System.out.println(x); 输出结果: bc 2.JDK6中的subString()方法 String类实现是使用到了char数组.在JDK6里面String类有三个属性char v
In bash shell, when you use a dollar sign followed by a variable name, shell expands the variable with its value. This feature of shell is called parameter expansion. But parameter expansion has numerous other forms which allow you to expand a parame