java中字符串运算

g.drawString("字符串s1的长度为:"+n1,5,70); g.drawString("字符串s2的前缀是否为we? "+s2.startsWith("we"),5,90); String s3[]={"door","apple","Applet","girl","boy"}; g.drawString("s3=door,apple,Applet,girl,boy",5,110); for(int i=0;i