if选择结构
if(condition1){
statements;
.........
}
多重if选择结构
if(condition1){
statements;
........
}else if(condition2){
statements;
........
}else{
statements;
........
}
嵌套if选择结构
if(condition1){
statements;
..........
if(condition2){
statements;
..........
}else{
statements;
..........
}
}else{
}
- 产生随机数:int random=(int)(Math.random()*10);//10~0中任意整数