class Human { //Humanの定義
String name; //名前を保持するフィールド変数。クラス内で使用される変数宣言。
String age;
String hobby;

void selfIntroduction () { //自己紹介するメソッド
System.out.println("私は" + name + age+ です。趣味は+hobby+"です");
}
}

public class ExamHuman {
public static void main (String[] args) {
System.out.println("programmed by 城間涼子.");
Human h1 = new Human();
Human h2 = new Human(); // Humanクラス
h1.name = args[0];
h2.name = args[3];
h1.age = args[1];
h2.age = args[4];
h1.hobby = args[2];
h2.hobby = args[5];

h1.selfIntroduction();
h2.selfIntroduction();
}
}

public class ExamTree {
public static void main(String[] args) {
System.out.println("programmed by 城間涼子.");
Tree tree1 = new Tree();
tree1.set(100, 5);
Tree tree2 = new Tree();
tree2.set(150, 7);
tree1.grow(2);
tree2.grow(2);

System.out.println("tree1の2年後の高さは" + tree1.getHeight() + "mm");
System.out.println("tree2の2年後の高さは" + tree2.getHeight() + "mm");
tree1.grow(20);
tree2.grow(20);
System.out.println("tree1の20年後の高さは" + tree1.getHeight() + "mm");
System.out.println("tree2の20年後の高さは" + tree2.getHeight() + "mm");
}
}

class Tree {
double height;
double growthRate;
double year;

void set (double height,double growthRate){
this.height = height;
this.growthRate = growthRate;
}

void grow(double year){
this.year = year;
}

double getHeight(){
double jojo=0;
growthRate*year+height = jojo;
return jojo;
}

}

C:\Users\ic161214\Desktop\授業\五年生\応用プロ２\practice11\ExamTree>javac ExamTree.java
ExamTree.java:36: エラー: 予期しない型
growthRate*year+height = jojo;
^
期待値: 変数
検出値: 値
エラー1個

jojo = growthRate*year+height;