質問編集履歴
1
Point.javaとPointObj.javaを追記しました。忘れていました、申し訳ありません。
title
CHANGED
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File without changes
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body
CHANGED
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@@ -138,6 +138,52 @@
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138
138
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139
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```
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140
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141
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### Point.java
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141
142
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143
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```java
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144
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public interface Point {
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145
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public double getX();
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146
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public double getY();
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147
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public double dist(Point q);
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148
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}
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149
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150
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```
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151
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152
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### PointObj.java
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153
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154
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```java
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155
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public class PointObj implements Point {
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156
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157
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double x;
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158
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double y;
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159
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160
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PointObj(double x, double y) {
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161
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this.x = x;
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162
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this.y = y;
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163
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}
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164
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165
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public double getX() {
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166
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return this.x;
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167
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}
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168
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169
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public double getY() {
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170
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return this.y;
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171
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}
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172
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173
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public double dist(Point q) {
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174
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double dx = this.x - q.getX();
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175
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double dy = this.y - q.getY();
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176
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return Math.sqrt(dx*dx + dy*dy);
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177
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}
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178
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179
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public String toString() {
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180
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return "(" + this.x + ", " + this.y + ")";
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181
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}
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182
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183
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}
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184
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185
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```
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186
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187
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142
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### 試したこと
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143
189
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メソッド名等、誤字脱字がないか何度も確認しました。
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